Ready-to-assemble house

ABSTRACT

A ready-to-assemble house having sufficient strength includes a column member and wall members that are made of cardboard or heavy paper. A side end portion of the wall member is fixed to the column member. A side end portion of the wall member is fixed to a side end portion of the wall member. A side end portion of the wall member is fixed to a side end portion of the wall member. A side end portion and a side end portion of the wall member are respectively fixed to a side end portion of the wall member and the side end portion of the wall member. The column member is configured to become shaped as a rectangular column by being folded along folding lines.

CROSS REFERENCE TO RELATED APPLICATION

This is a Continuation of International Application No. PCT/JP2013/082347 filed Dec. 2, 2013, which claims the benefit of Japanese Applications No. 2013-194114 filed Sep. 19, 2013, and No. 2013-213716 filed Oct. 11, 2013. The contents of these applications are hereby incorporated by reference in their entirety.

TECHNICAL FIELD

The present invention relates to a ready-to-assemble house made of paper.

BACKGROUND ART

When a disaster such as an earthquake has occurred, there are cases where a large number of disaster victims are forced to live together in a single evacuation shelter. In order to relieve the psychological burden on the disaster victims even a small amount at such an evacuation shelter, there is desire to retain private space for the disaster victims. A means for retaining such private space is disclosed in Patent Literature 1, for example. This literature discloses the creation of partitions by folding a single piece of cardboard in order to divide the space between disaster victims.

CITATION LIST Patent Literature

[PLT 1] JP 2010-255238A

SUMMARY OF INVENTION Technical Problem

The partitions in Patent Literature 1 retain a minimum level of private space, which makes it possible to relieve the psychological burden on disaster victims to a certain extent. However, due to these partitions being made of cardboard, concern remains about strength. These concerns about strength lead to an increased psychological burden on the disaster victims.

Solution to Problem

The present invention was achieved in light of the aforementioned issues, and an object thereof is to provide a ready-to-assemble house that has sufficient strength.

A ready-to-assemble house according to the present invention includes: a first column member made of cardboard or heavy paper; and first to fourth wall members made of cardboard or heavy paper, wherein the first column member has a plurality of folding lines and is configured to become shaped as a column having n sides (n being an integer greater than or equal to 3) by being folded along the folding lines, the first wall member is configured such that a first side end portion is fixed to the first column member, the second wall member is configured such that a first side end portion is fixed to a second side end portion of the first wall member, the third wall member is configured such that a first side end portion is fixed to a second side end portion of the second wall member, and the fourth wall member is configured such that a first side end portion is fixed to a second side end portion of the third wall member, and a second side end portion is fixed to the first side end portion of the first wall member.

In this ready-to-assemble house, the first side end portion of the second wall member is fixed to the second side end portion of the first wall member, the first side end portion of the third wall member is fixed to the second side end portion of the second wall member, the first side end portion of the fourth wall member is fixed to the second side end portion of the third wall member, and the second side end portion of the fourth wall member is fixed to the first side end portion of the first wall member, thus forming the space surrounded by the first to fourth wall members. Accordingly, it is possible to retain sufficient private space. Furthermore, the first column member, to which the first side end portion of the first wall member is fixed, can become shaped as a column having n sides by the first column member being folded along the folding lines. This column member functions as a support column and raises the strength of the ready-to-assemble house after assembly.

Advantageous Effects of Invention

According to the present invention, a ready-to-assemble house having sufficient strength is realized.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of a first embodiment of a ready-to-assemble house according to the present invention.

FIG. 2 is a plan view of the ready-to-assemble house in FIG. 1.

FIG. 3 is a plan view of a column member 10 in FIG. 1.

FIG. 4 is a plan view of a column member 20 in FIG. 1.

FIG. 5 is a plan view of a column member 30 in FIG. 1.

FIG. 6 is a plan view of a column member 40 in FIG. 1.

FIG. 7 is a plan view of a wall member 50 in FIG. 1.

FIG. 8 is a plan view of a wall member 60 in FIG. 1.

FIG. 9 is a plan view of a wall member 70 in FIG. 1.

FIG. 10 is a plan view of a wall member 80 in FIG. 1.

FIG. 11 is a plan view of a roof member 90 in FIG. 1.

FIG. 12 is a perspective view of a second embodiment of a ready-to-assemble house according to the present invention.

FIG. 13 is a plan view of the ready-to-assemble house in FIG. 12.

FIG. 14 is a plan view of a column member 200 in FIG. 12.

FIG. 15 is a plan view of a column member 400 in FIG. 12.

FIG. 16 is a plan view of a wall member 610 in FIG. 12.

FIG. 17 is a plan view of a wall member 620 in FIG. 12.

FIG. 18 is a plan view of a wall member 810 in FIG. 12.

FIG. 19 is a plan view of a wall member 820 in FIG. 12.

FIG. 20 is a perspective view of a third embodiment of a ready-to-assemble house according to the present invention.

FIG. 21 is a plan view of the ready-to-assemble house in FIG. 20.

FIG. 22 is a plan view of a column member 10′ in FIG. 20.

FIG. 23 is a plan view of a column member 20′ in FIG. 20.

FIG. 24 is a plan view of a column member 30′ in FIG. 20.

FIG. 25 is a plan view of a column member 40′ in FIG. 20.

FIG. 26 is a plan view of a wall member 50′ in FIG. 20.

FIG. 27 is a plan view of a wall member 60′ in FIG. 20.

FIG. 28 is a plan view of a wall member 70′ in FIG. 20.

FIG. 29 is a plan view of a wall member 80′ in FIG. 20.

FIG. 30 is a perspective view of a state in which a roof member 90′ is attached to the ready-to-assemble house in FIG. 20.

FIG. 31 is a cross-sectional view taken along line XXXI-XXXI in FIG. 30.

FIG. 32 is a plan view of the roof member 90′ in FIG. 30.

FIG. 33 is a perspective view of a fourth embodiment of a ready-to-assemble house according to the present invention.

FIG. 34 is a plan view of the ready-to-assemble house in FIG. 33.

FIG. 35 is a plan view of a column member 200′ in FIG. 33.

FIG. 36 is a plan view of a column member 400′ in FIG. 33.

FIG. 37 is a plan view of a wall member 610′ in FIG. 33.

FIG. 38 is a plan view of a wall member 620′ in FIG. 33.

FIG. 39 is a plan view of a wall member 810′ in FIG. 33.

FIG. 40 is a plan view of a wall member 820′ in FIG. 33.

FIG. 41 is a diagram for describing a variation pertaining to a fixing portion structure of the present invention.

FIG. 42 is a perspective view of a column member according to the variation.

FIG. 43 is a plan view of a column member 100′ in FIG. 42.

DESCRIPTION OF EMBODIMENTS

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that in the description of the drawings, like elements are denoted by like reference numerals, and redundant descriptions are omitted.

First Embodiment

FIG. 1 is a perspective view of a first embodiment of a ready-to-assemble house according to the present invention. Also, FIG. 2 is a plan view of the ready-to-assemble house in FIG. 1. A ready-to-assemble house 1 includes a column member 10 (first column member), a column member 20 (second column member), a column member 30 (third column member), a column member 40 (fourth column member), a wall member 50 (first wall member), a wall member 60 (second wall member), a wall member 70 (third wall member), and a wall member 80 (fourth wall member). The ready-to-assemble house 1 has a space S1 surrounded by these wall members 50, 60, 70, and 80. The size of the space S1 is, for example, approximately 1 m in width (the gap between the wall member 60 and the wall member 80), approximately 1.3 m in depth (the gap between the wall member 50 and the wall member 70), and approximately 2 m in height. This ready-to-assemble house 1 can be used as an enclosure for when disaster victims relieve themselves at an evacuation shelter, for example. The column members 10, 20, 30, and 40 and the wall members 50, 60, 70, and 80 are each made of cardboard or heavy paper.

The ready-to-assemble house 1 further includes a roof member 90 that covers the space S1 from above. The roof member 90 is also made of cardboard or heavy paper.

The wall member 60 is configured such that a side end portion 60 a (first side end portion) is fixed to a side end portion 50 b (second side end portion) of the wall member 50. The wall member 70 is configured such that a side end portion 70 a (first side end portion) is fixed to a side end portion 60 b (second side end portion) of the wall member 60. Also, the wall member 80 is configured such that a side end portion 80 a (first side end portion) is fixed to a side end portion 70 b (second side end portion) of the wall member 70, and a side end portion 80 b (second side end portion) is fixed to a side end portion 50 a (first side end portion) of the wall member 50.

The column member 10 is fixed to the side end portion 50 a of the wall member 50 and the side end portion 80 b of the wall member 80. The column member 20 is fixed to the side end portion 50 b of the wall member 50 and the side end portion 60 a of the wall member 60. The column member 30 is fixed to the side end portion 60 b of the wall member 60 and the side end portion 70 a of the wall member 70. Also, the column member 40 is fixed to the side end portion 70 b of the wall member 70 and the side end portion 80 a of the wall member 80.

FIG. 3 is a plan view of the column member 10. The column member 10 is made of one piece of cardboard or heavy paper. Three folding lines L11 to L13 are formed in the column member 10. The column member 10 is configured to become shaped as a rectangular column by being folded along these folding lines L11 to L13. Specifically, the column member 10 is formed into a rectangular column by mountain-folding it along the folding lines L11 to L13 at approximately right angles (see FIGS. 1 and 2).

Furthermore, claw portions 14 and hole portions 18 a, 18 b, and 18 c are formed in the column member 10. The claw portions 14 are formed so as to protrude from the outer periphery of the column member 10. The hole portions 18 a are formed between the folding line L11 and the outer periphery of the column member 10. In the present embodiment, three hole portions 18 a are formed. The hole portions 18 b and 18 c are formed between the folding line L13 and the outer periphery of the column member 10. In the present embodiment, five hole portions 18 b and four hole portions 18 c are arranged alternatingly.

The gap between the folding line L11 and the outer periphery of the column member 10 is approximately equal to the gap between the folding line L12 and the folding line L13. Also, the gap between the folding line L11 and the folding line L12 is approximately equal to the gap between the folding line L13 and the hole portions 18 b. During assembly, the claw portions 14 are inserted into the hole portions 18 b via later-described notch portions 56 a of the wall member 50. Later-described claw portions 85 b of the wall member 80 are inserted into the hole portions 18 a. Also, later-described claw portions 84 b of the wall member 80 are inserted into the hole portions 18 c.

FIG. 4 is a plan view of the column member 20. The column member 20 is made of one piece of cardboard or heavy paper. Three folding lines L21 to L23 are formed in the column member 20. The column member 20 is configured to become shaped as a rectangular column by being folded along these folding lines L21 to L23. Specifically, the column member 20 is formed into a rectangular column by mountain-folding it along the folding lines L21 to L23 at approximately right angles (see FIGS. 1 and 2).

Furthermore, claw portions 24 and hole portions 28 a, 28 b, and 28 c are formed in the column member 20. The claw portions 24 are formed so as to protrude from the outer periphery of the column member 20. The hole portions 28 a are formed between the folding line L21 and the outer periphery of the column member 20. In the present embodiment, three hole portions 28 a are formed. The hole portions 28 b and 28 c are formed between the folding line L23 and the outer periphery of the column member 20. In the present embodiment, five hole portions 28 b and four hole portions 28 c are arranged alternatingly.

The gap between the folding line L21 and the outer periphery of the column member 20 is approximately equal to the gap between the folding line L22 and the folding line L23. Also, the gap between the folding line L21 and the folding line L22 is approximately equal to the gap between the folding line L23 and the hole portions 28 b. Note that a gap d22 between the hole portions 28 c and the outer periphery of the column member 20 is smaller than a gap d12 between the hole portions 18 c and the outer periphery of the column member 10 (see FIG. 3). During assembly, the claw portions 24 are inserted into the hole portions 28 b via later-described notch portions 56 b of the wall member 50. Later-described claw portions 65 a of the wall member 60 are inserted into the hole portions 28 a. Also, later-described claw portions 64 a of the wall member 60 are inserted into the hole portions 28 c.

FIG. 5 is a plan view of the column member 30. The column member 30 is made of one piece of cardboard or heavy paper. Three folding lines L31 to L33 are formed in the column member 30. The column member 30 is configured to become shaped as a rectangular column by being folded along these folding lines L31 to L33. Specifically, the column member 30 is formed into a rectangular column by mountain-folding it along the folding lines L31 to L33 at approximately right angles (see FIGS. 1 and 2).

Furthermore, claw portions 34 and hole portions 38 a, 38 b, and 38 c are formed in the column member 30. The claw portions 34 are formed so as to protrude from the outer periphery of the column member 30. The hole portions 38 a are formed between the folding line L31 and the outer periphery of the column member 30. In the present embodiment, three hole portions 38 a are formed. The hole portions 38 b and 38 c are formed between the folding line L33 and the outer periphery of the column member 30. In the present embodiment, five hole portions 38 b and four hole portions 38 c are arranged alternatingly.

The gap between the folding line L31 and the outer periphery of the column member 30 is approximately equal to the gap between the folding line L32 and the folding line L33. Also, the gap between the folding line L31 and the folding line L32 is approximately equal to the gap between the folding line L33 and the hole portions 38 b. Note that a gap d32 between the hole portions 38 c and the outer periphery of the column member 30 is smaller than the gap d12 between the hole portions 18 c and the outer periphery of the column member 10 (see FIG. 3). During assembly, the claw portions 34 are inserted into the hole portions 38 b via later-described notch portions 76 a of the wall member 70. Later-described claw portions 65 b of the wall member 60 are inserted into the hole portions 38 a. Also, later-described claw portions 64 b of the wall member 60 are inserted into the hole portions 38 c.

FIG. 6 is a plan view of the column member 40. The column member 40 is made of one piece of cardboard or heavy paper. Three folding lines L41 to L43 are formed in the column member 40. The column member 40 is configured to become shaped as a rectangular column by being folded along these folding lines L41 to L43. Specifically, the column member 40 is formed into a rectangular column by mountain-folding it along the folding lines L41 to L43 at approximately right angles (see FIGS. 1 and 2).

Furthermore, claw portions 44 and hole portions 48 a, 48 b, and 48 c are formed in the column member 40. The claw portions 44 are formed so as to protrude from the outer periphery of the column member 40. The hole portions 48 a are formed between the folding line L41 and the outer periphery of the column member 40. In the present embodiment, three hole portions 48 a are formed. The hole portions 48 b and 48 c are formed between the folding line L43 and the outer periphery of the column member 40. In the present embodiment, five hole portions 48 b and four hole portions 48 c are arranged alternatingly.

The gap between the folding line L41 and the outer periphery of the column member 40 is approximately equal to the gap between the folding line L42 and the folding line L43. Also, the gap between the folding line L41 and the folding line L42 is approximately equal to the gap between the folding line L43 and the hole portions 48 b. Note that a gap d42 between the hole portions 48 c and the outer periphery of the column member 40 is smaller than the gap d12 between the hole portions 18 c and the outer periphery of the column member 10 (see FIG. 3). During assembly, the claw portions 44 are inserted into the hole portions 48 b via later-described notch portions 76 b of the wall member 70. Later-described claw portions 85 a of the wall member 80 are inserted into the hole portions 48 a. Also, later-described claw portions 84 a of the wall member 80 are inserted into the hole portions 48 c.

FIG. 7 is a plan view of the wall member 50. The wall member 50 is made of one piece of cardboard or heavy paper. The wall member 50 has a horizontally symmetrical structure, with the exception of a door 52. Notch portions 56 a and hole portions 58 a are formed in a side end portion 50 a of the wall member 50. In the present embodiment, five notch portions 56 a and four hole portions 58 a are arranged alternatingly. A depth d51 a of the notch portions 56 a is approximately equal to a gap d52 a between the hole portions 58 a and the outer periphery of the wall member 50. During assembly, the above-described claw portions 14 of the column member 10 are inserted into the hole portions 18 b via the notch portions 56 a. Also, later-described claw portions 84 b of the wall member 80 are inserted into the hole portions 58 a.

Notch portions 56 b and hole portions 58 b are formed in a side end portion 50 b of the wall member 50. In the present embodiment, five notch portions 56 b and four hole portions 58 b are arranged alternatingly. A depth d51 b of the notch portions 56 b is approximately equal to a gap d52 b between the hole portions 58 b and the outer periphery of the wall member 50. During assembly, the above-described claw portions 24 of the column member 20 are inserted into the hole portions 28 b via the notch portions 56 b. Also, later-described claw portions 64 a of the wall member 60 are inserted into the hole portions 58 b.

A folding line L51 and a cut line C51 are formed in the central portion of the wall member 50. The door 52 is obtained by cutting along the cut line C51. The door 52 is opened by folding it along the folding line L51, thus making it possible to enter and exit the space S1 (see FIG. 1). A protrusion portion 52 a is provided in the door 52. A gap d53 between the left end of the door 52 (the portion excluding the protrusion portion 52 a) and the notch portions 56 a is approximately equal to the gap d12 between the hole portions 18 c and the outer periphery of the column member 10 (see FIG. 3). For this reason, in the ready-to-assemble house 1 after assembly, a portion of the column member 10 (the portion between the hole portions 18 c and the outer periphery of the column member 10) overlaps the protrusion portion 52 a of the door 52, and thus functions as a stopper for the door 52.

FIG. 8 is a plan view of the wall member 60. The wall member 60 is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. Claw portions 64 a are formed on a side end portion 60 a of the wall member 60. In the present embodiment, four claw portions 64 a are formed. During assembly, the claw portions 64 a are inserted into the hole portions 58 b of the wall member 50 and the hole portions 28 c of the column member 20. Furthermore, folding lines L61 a and cut lines C61 a are formed in the side end portion 60 a. A gap d61 a between the folding lines L61 a and the outer periphery of the wall member 60 is approximately equal to a gap d21 between the hole portions 28 a of the column member 20 and the outer periphery of the column member 20 (see FIG. 4).

Claw portions 64 b are formed on a side end portion 60 b of the wall member 60. In the present embodiment, four claw portions 64 b are formed. During assembly, the claw portions 64 b are inserted into later-described hole portions 78 a of the wall member 70 and the hole portions 38 c of the column member 30. Furthermore, folding lines L61 b and cut lines C61 b are formed in the side end portion 60 b. A gap d61 b between the folding lines L61 b and the outer periphery of the wall member 60 is approximately equal to a gap d31 between the hole portions 38 a of the column member 30 and the outer periphery of the column member 30 (see FIG. 5).

The claw portions 65 a and 65 b are formed by cutting along the cut lines C61 a and C61 b and then valley-folding the claw portions along the folding lines L61 a and L61 b at approximately right angles. In the present embodiment, three claw portions 65 a and three claw portions 65 b are formed. During assembly, the claw portions 65 a are inserted into the hole portions 28 a of the column member 20. Also, the claw portions 65 b are inserted into the hole portions 38 a of the column member 30.

FIG. 9 is a plan view of the wall member 70. The wall member 70 is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. The structure of the wall member 70 is the same as the structure of the wall member 50, with the exception that the folding line L51 and the cut line C51 are not formed. Specifically, notch portions 76 a and hole portions 78 a are formed in a side end portion 70 a of the wall member 70. In the present embodiment, five notch portions 76 a and four hole portions 78 a are arranged alternatingly. A depth d71 a of the notch portions 76 a is approximately equal to a gap d72 a between the hole portions 78 a and the outer periphery of the wall member 70. During assembly, the above-described claw portions 34 of the column member 30 are inserted into the hole portions 38 b via the notch portions 76 a. Also, the claw portions 64 b of the wall member 60 are inserted into the hole portions 78 a.

Notch portions 76 b and hole portions 78 b are formed in a side end portion 70 b of the wall member 70. In the present embodiment, five notch portions 76 b and four hole portions 78 b are arranged alternatingly. A depth d71 b of the notch portions 76 b is approximately equal to a gap d72 b between the hole portions 78 b and the outer periphery of the wall member 70. During assembly, the above-described claw portions 44 of the column member 40 are inserted into the hole portions 48 b via the notch portions 76 b. Also, later described claw portions 84 a of the wall member 80 are inserted into the hole portions 78 b.

FIG. 10 is a plan view of the wall member 80. The wall member 80 is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. The structure of the wall member 80 is the same as the structure of the wall member 60. Specifically, claw portions 84 a are formed on a side end portion 80 a of the wall member 80. In the present embodiment, four claw portions 84 a are formed. During assembly, the claw portions 84 a are inserted into the hole portions 78 b of the wall member 70 and the hole portions 48 c of the column member 40. Furthermore, a folding line L81 a and a cut line C81 a are formed in the side end portion 80 a. A gap d81 a between the folding line L81 a and the outer periphery of the wall member 80 is approximately equal to a gap d41 between the hole portions 48 a of the column member 40 and the outer periphery of the column member 40 (see FIG. 6).

Claw portions 84 b are formed on a side end portion 80 b of the wall member 80. In the present embodiment, four claw portions 84 b are formed. During assembly, the claw portions 84 b are inserted into the hole portions 58 a of the wall member 50 and the hole portions 18 c of the column member 10. Furthermore, a folding line L81 b and a cut line C81 b are formed in the side end portion 80 b. A gap d81 b between the folding line L81 b and the outer periphery of the wall member 80 is approximately equal to a gap d11 between the hole portions 18 a of the column member 10 and the outer periphery of the column member 10 (see FIG. 3).

The claw portions 85 a and 85 b are formed by cutting along the cut lines C81 a and C81 b and then valley-folding the claw portions along the folding lines L81 a and L81 b at approximately right angles. In the present embodiment, three claw portions 85 a and three claw portions 85 b are formed. During assembly, the claw portions 85 a are inserted into the hole portions 48 a of the column member 40. Also, the claw portions 85 b are inserted into the hole portions 18 a of the column member 10.

FIG. 11 is a plan view of the roof member 90. Folding lines L91 to L94 are formed in the roof member 90. The lengths of the folding lines L91 and 93 are approximately equal to the width of the space S1 (see FIG. 1). Also, the lengths of the folding lines L92 and 94 are approximately equal to the depth of the space S1.

The folding lines L95 and L96 are formed on an extension line of the folding line L91. Similarly, the folding lines L97 and L98 are formed on an extension line of the folding line L93. Also, cut lines C92 and C93 are formed on an extension line of the folding line L92. Similarly, cut lines C91 and C94 are formed on an extension line of the folding line L94.

Folding lines L99 a and L99 b and cut lines C95 a and C95 b are formed in the region between the cut line C91 and the cut line C92. Claw portions 95 a and 95 b are formed by cutting along the cut lines C95 a and C95 b and then mounting-folding the claw portions along the folding lines L99 a and L99 b at approximately right angles. Similarly, folding lines L99 c and L99 d and cut lines C95 c and C95 d are formed in the region between the cut line C93 and the cut line C94. Claw portions 95 c and 95 d are formed by cutting along the cut lines C95 c and C95 d and then mountain-folding the claw portions along the folding lines L99 c and L99 d at approximately right angles.

A hole portion 98 a is formed in the region between the cut line C91 and the outer periphery of the roof member 90. A hole portion 98 b is formed in the region between the cut line C92 and the outer periphery of the roof member 90. A hole portion 98 c is formed in the region between the cut line C93 and the outer periphery of the roof member 90. Also, a hole portion 98 d is formed in the region between the cut line C94 and the outer periphery of the roof member 90.

The folding line L99 a and the hole portion 98 a have a relationship in which their lengths are approximately equal to each other. Also, a gap d91 between the folding line L99 a and the folding line L91 is approximately equal to a gap d92 between the hole portion 98 a and the cut line C91. Also, a gap d93 between the folding line L99 a and the cut line C91 is approximately equal to a gap d94 between the hole portion 98 a and the folding line L95. The relationship between the folding line L99 b and the hole portion 98 b, the relationship between the folding line L99 c and the hole portion 98 c, and the relationship between the folding line L99 d and the hole portion 98 d are the same as the relationship between the folding line L99 a and the hole portion 98 a.

Furthermore, cuts 92 a, 92 b, 92 c, and 92 d are formed two each in the roof member 90. One of the cuts 92 a is formed so as to be continuous with the folding line L95. The gap between the two cuts 92 a is approximately equal to the gap between the folding line L12 and the folding line L13 in the column member 10. One of the cuts 92 b is formed so as to be continuous with the folding line L96. The gap between the two cuts 92 b is approximately equal to the gap between the folding line L22 and the folding line L23 in the column member 20. One of the cuts 92 c is formed so as to be continuous with the folding line L97. The gap between the two cuts 92 c is approximately equal to the gap between the folding line L32 and the folding line L33 in the column member 30. Also, one of the cuts 92 d is formed so as to be continuous with the folding line L98. The gap between the two cuts 92 d is approximately equal to the gap between the folding line L42 and the folding line L43 in the column member 40.

After cutting along the cut lines C91 to C94, the roof member is mountain-folded along the folding lines L92 and L94 at approximately right angles, and also mountain-folded along the folding lines L95 to L98 at approximately right angles. Thereafter, the roof member is mountain-folded along the folding lines L91 and L93 at approximately right angles such that the claw portions 95 a, 95 b, 95 c, and 95 d are respectively inserted into the hole portions 98 a, 98 b, 98 c, and 98 d. Accordingly, the box-shaped roof member 90 having an open bottom is obtained as shown in FIG. 1. The cuts 92 a in the roof member 90 are engaged with the column member 10. The cuts 92 b are engaged with the column member 20. The cuts 92 c are engaged with the column member 30. Also, the cuts 92 d are engaged with the column member 40. Accordingly, the roof member 90 is fixed to the column members 10, 20, 30, and 40 and the wall members 50, 60, 70, and 80.

Effects of the ready-to-assemble house 1 will be described below. In the ready-to-assemble house 1, the side end portion 60 a of the wall member 60 is fixed to the side end portion 50 b of the wall member 50, the side end portion 70 a of the wall member 70 is fixed to the side end portion 60 b of the wall member 60, the side end portion 80 a of the wall member 80 is fixed to the side end portion 70 b of the wall member 70, and the side end portion 80 b of the wall member 80 is fixed to the side end portion 50 a of the wall member 50, thus forming the space S1 surrounded by the wall members 50, 60, 70, and 80. The ready-to-assemble house 1 obtains the space S1 surrounded on four sides in this way, thus making it possible to retain sufficient private space. Accordingly, it is possible to sufficiently protect the privacy of the user of the ready-to-assemble house 1.

Also, in the present embodiment, the top of the space S1 is also covered by the roof member 90. Accordingly, it is possible to more substantially protect the privacy of the user of the ready-to-assemble house 1.

Furthermore, the column member 10 can be formed into a rectangular column by folding it along the folding lines L11 to L13. This column member 10 functions as a support column and raises the strength of the ready-to-assemble house 1 after assembly. Accordingly, the ready-to-assemble house 1 having sufficient strength is realized.

In the present embodiment, the column member 20 can also be formed into a rectangular column by folding it along the folding lines L21 to L23. Accordingly, the strength of the ready-to-assemble house 1 is raised even further. Similarly, the column member 30 can be formed into a rectangular column by folding it along the folding lines L31 to L33, and the column member 40 can be formed into a rectangular column by folding it along the folding lines L41 to L43. These column members 30 and 40 also contribute to improvement in the strength of the ready-to-assemble house 1.

The column members 10, 20, 30, and 40, the wall members 50, 60, 70, and 80, and the roof member 90 are each made of cardboard or heavy paper. For this reason, the ready-to-assemble house 1 can be easily disposed of. Also, due to cardboard and heavy paper being relatively light-weight, the ready-to-assemble house 1 can be easily transported and moved before and after assembly. In particular, if these members are made of cardboard, a ready-to-assemble house 1 having a superior deodorization effect and sound-proofing effect is realized.

Furthermore, the column members 10, 20, 30, and 40, the wall members 50, 60, 70, and 80, and the roof member 90 are each made of a single flat piece of cardboard or heavy paper before assembly. For this reason, it is possible to reduce the amount of space required for storage of the ready-to-assemble house 1 before assembly.

The ready-to-assemble house 1 is configured to be assembled by folding members along folding lines and cutting members along cut lines. For this reason, a ready-to-assemble house 1 that is easy to assemble is realized.

Second Embodiment

FIG. 12 is a perspective view of a second embodiment of a ready-to-assemble house according to the present invention. Also, FIG. 13 is a plan view of the ready-to-assemble house in FIG. 12. A ready-to-assemble house 2 includes a column member 10 (first column member), a column member 20 (second column member), a column member 30 (third column member), a column member 40 (fourth column member), a column member 200 (fifth column member), a column member 400 (sixth column member), a wall member 50 (first wall member), a wall member 600 (second wall member), a wall member 70 (third wall member), and a wall member 800 (fourth wall member). The size of a space S2 is, for example, approximately 1 m in width (the gap between the wall member 600 and the wall member 800), approximately 2.4 m in depth (the gap between the wall member 50 and the wall member 70), and approximately 2 m in height. This ready-to-assemble house 2 can be used as an enclosure for when disaster victims sleep at an evacuation shelter, for example. The structures of the column members 10, 20, 30, and 40, and the structures of the wall members 50 and 70 are as described in the ready-to-assemble house 1. The column members 200 and 400 and the wall members 600 and 800 are each made of cardboard or heavy paper.

The wall member 600 is constituted by two wall members 610 and 620 (sub wall members) that can be connected to each other. These wall members 610 and 620 are connected to each other via the column member 200. The wall members 610 and 620 are made of cardboard or heavy paper.

Similarly, the wall member 800 is constituted by two wall members 810 and 820 (sub wall members) that can be connected to each other. These wall members 810 and 820 are connected to each other via the column member 400. The wall members 810 and 820 are also made of cardboard or heavy paper.

FIG. 14 is a plan view of the column member 200. The column member 200 is made of one piece of cardboard or heavy paper. Three folding lines L201 to L203 are formed in the column member 200. The column member 200 is formed into a rectangular column by folding it along these folding lines L201 to L203. Specifically, the column member 200 is formed into a rectangular column by mountain-folding it along the folding lines L201 to L203 at approximately right angles (see FIGS. 12 and 13).

Furthermore, claw portions 204 and hole portions 208 a, 208 b, and 208 c are formed in the column member 200. The claw portions 204 are formed so as to protrude from the outer periphery of the column member 200. In the present embodiment, five claw portions 204 are formed. The hole portions 208 a and 208 b are formed between the folding line L202 and the folding line L203. In the present embodiment, three holes portions 208 a and three hole portions 208 b are formed. The hole portions 208 c are formed between the folding line L203 and the outer periphery of the column member 200. In the present embodiment, five hole portions 208 c are formed.

The gap between the folding line L201 and the outer periphery of the column member 200 is approximately equal to the gap between the folding line L202 and the folding line L203. Also, the gap between the folding line L201 and the folding line L202 is approximately equal to the gap between the folding line L203 and the hole portions 208 c. During assembly, the claw portions 204 are inserted into the hole portions 208 c. Later-described claw portions 625 a of the wall member 620 are inserted into the hole portions 208 a. Also, later-described claw portions 615 b of the wall member 610 are inserted into the hole portions 208 b.

FIG. 15 is a plan view of the column member 400. The column member 400 is made of one piece of cardboard or heavy paper. Three folding lines L401 to L403 are formed in the column member 400. The column member 400 is formed into a rectangular column by folding it along these folding lines L401 to L403. Specifically, the column member 400 is formed into a rectangular column by mountain-folding it along the folding lines L401 to L403 at approximately right angles (see FIGS. 12 and 13).

Furthermore, claw portions 404 and hole portions 408 a, 408 b, and 408 c are formed in the column member 400. The claw portions 404 are formed so as to protrude from the outer periphery of the column member 400. In the present embodiment, five claw portions 404 are formed. The hole portions 408 a and 408 b are formed between the folding line L402 and the folding line L403. In the present embodiment, three holes portions 408 a and three hole portions 408 b are formed. The hole portions 408 c are formed between the folding line L403 and the outer periphery of the column member 400. In the present embodiment, five hole portions 408 c are formed.

The gap between the folding line L401 and the outer periphery of the column member 400 is approximately equal to the gap between the folding line L402 and the folding line L403. Also, the gap between the folding line L401 and the folding line L402 is approximately equal to the gap between the folding line L403 and the hole portions 408 c. During assembly, the claw portions 404 are inserted into the hole portions 408 c. Later-described claw portions 825 b of the wall member 820 are inserted into the hole portions 408 a. Also, later-described claw portions 815 a of the wall member 810 are inserted into the hole portions 408 b.

FIG. 16 is a plan view of the wall member 610. The structure of the wall member 610 is the same as the structure of the wall member 60. Specifically, claw portions 614 a are formed on a side end portion 610 a of the wall member 610. In the present embodiment, four claw portions 614 a are formed. During assembly, the claw portions 614 a are inserted into the hole portions 58 b of the wall member 50 and the hole portions 28 c of the column member 20. Furthermore, a folding line L611 a and a cut line C611 a are formed in the side end portion 610 a. A gap d611 a between the folding line L611 a and the outer periphery of the wall member 610 is approximately equal to the gap d21 between the hole portions 28 a of the column member 20 and the outer periphery of the column member 20 (see FIG. 4).

Claw portions 614 b are formed on a side end portion 610 b of the wall member 610. In the present embodiment, four claw portions 614 b are formed. During assembly, the claw portions 614 b are fitted into later-described notch portions 626 in the wall member 620. Furthermore, a folding line L611 b and a cut line C611 b are formed in the side end portion 610 b. A gap d611 b between the folding line L611 b and the outer periphery of the wall member 610 is approximately equal to the gap d31 between the hole portions 38 a of the column member 30 and the outer periphery of the column member 30 (see FIG. 5).

The claw portions 615 a and 615 b are formed by cutting along the cut lines C611 a and C611 b and then valley-folding the claw portions along the folding lines L611 a and L611 b at approximately right angles. In the present embodiment, three claw portions 615 a and three claw portions 615 b are formed. During assembly, the claw portions 615 a are inserted into the hole portions 28 a of the column member 20. Also, the claw portions 615 b are inserted into the hole portions 208 b of the column member 200.

FIG. 17 is a plan view of the wall member 620. The wall member 620 is made of one piece of cardboard or heavy paper. Notch portions 626 are formed in a side end portion 620 a of the wall member 620. In the present embodiment, four notch portions 626 are formed. The shape of the notch portions 626 is approximately the same as the shape of the claw portions 614 b of the wall member 610. During assembly, the claw portions 614 b of the wall member 610 are fitted into the notch portions 626. Furthermore, a folding line L621 a and a cut line C621 a are formed in the side end portion 620 a. The sum of a gap d621 between the folding line L621 a and the outer periphery of the wall member 620 and a gap d611 b between the folding line L611 b and the outer periphery of the wall member 610 is approximately equal to the gap between the hole portions 208 a and the hole portions 208 b of the column member 200.

Claw portions 624 are formed on a side end portion 620 b of the wall member 620. In the present embodiment, four claw portions 624 are formed. During assembly, the claw portions 624 are inserted into the hole portions 78 a of the wall member 70 and the hole portions 38 c of the column member 30. Furthermore, a folding line L621 b and a cut line C621 b are formed in the side end portion 620 b. A gap d622 between the folding line L621 b and the outer periphery of the wall member 620 is approximately equal to the gap d31 between the hole portions 38 a of the column member 30 and the outer periphery of the column member 30 (see FIG. 5).

The claw portions 625 a and 625 b are formed by cutting along the cut lines C621 a and C621 b and then valley-folding the claw portions along the folding lines L621 a and L621 b at approximately right angles. In the present embodiment, three claw portions 625 a and three claw portions 625 b are formed. During assembly, the claw portions 625 a are inserted into the hole portions 208 a of the column member 200. Also, the claw portions 625 b are inserted into the hole portions 38 a of the column member 30.

FIG. 18 is a plan view of the wall member 810. The structure of the wall member 810 is the same as the structure of the wall member 80. Specifically, claw portions 814 a are formed on a side end portion 810 a of the wall member 810. In the present embodiment, four claw portions 814 a are formed. During assembly, the claw portions 814 a are fitted into later-described notch portions 826 in the wall member 820. Furthermore, a folding line L811 a and a cut line C811 a are formed in the side end portion 810 a. A gap d811 a between the folding line L811 a and the outer periphery of the wall member 810 is approximately equal to the gap d41 between the hole portions 48 a of the column member 40 and the outer periphery of the column member 40 (see FIG. 6).

Claw portions 814 b are formed on a side end portion 810 b of the wall member 810. In the present embodiment, four claw portions 814 b are formed. During assembly, the claw portions 814 b are inserted into the hole portions 58 a of the wall member 50 and the hole portions 18 c of the column member 10. Furthermore, a folding line L811 b and a cut line C811 b are formed in the side end portion 810 b. A gap d811 b between the folding line L811 b and the outer periphery of the wall member 810 is approximately equal to the gap d11 between the hole portions 18 a of the column member 10 and the outer periphery of the column member 10 (see FIG. 3).

The claw portions 815 a and 815 b are formed by cutting along the cut lines C811 a and C811 b and then valley-folding the claw portions along the folding lines L811 a and L811 b at approximately right angles. In the present embodiment, three claw portions 815 a and three claw portions 815 b are formed. During assembly, the claw portions 815 a are inserted into the hole portions 408 b of the column member 400. Also, the claw portions 815 b are inserted into the hole portions 18 a of the column member 10.

FIG. 19 is a plan view of the wall member 820. The wall member 820 is made of one piece of cardboard or heavy paper. Claw portions 824 are formed on a side end portion 820 a of the wall member 820. In the present embodiment, four claw portions 824 are formed. During assembly, the claw portions 824 are inserted into the hole portions 78 b of the wall member 70 and the hole portions 48 c of the column member 40. Furthermore, a folding line L821 a and a cut line C821 a are formed in the side end portion 820 a. A gap d822 between the folding line L821 a and the outer periphery of the wall member 820 is approximately equal to the gap d41 between the hole portions 48 a of the column member 40 and the outer periphery of the column member 40 (see FIG. 6).

Notch portions 826 are formed in a side end portion 820 b of the wall member 820. In the present embodiment, four notch portions 826 are formed. The shape of the notch portions 826 is approximately the same as the shape of the claw portions 814 a of the wall member 810. During assembly, the claw portions 814 a of the wall member 810 are fitted into the notch portions 826. Furthermore, a folding line L821 b and a cut line C821 b are formed in the side end portion 820 b. The sum of a gap d821 between the folding line L821 b and the outer periphery of the wall member 820 and a gap d811 a between the folding line L811 a and the outer periphery of the wall member 810 is approximately equal to the gap between the hole portions 408 a and the hole portions 408 b of the column member 400.

The claw portions 825 a and 825 b are formed by cutting along the cut lines C821 a and C821 b and then valley-folding the claw portions along the folding lines L821 a and L821 b at approximately right angles. In the present embodiment, three claw portions 825 a and three claw portions 825 b are formed. During assembly, the claw portions 825 a are inserted into the hole portions 48 a of the column member 40. Also, the claw portions 825 b are inserted into the hole portions 408 a of the column member 400.

Effects of the ready-to-assemble house 2 will be described below. In the ready-to-assemble house 2, the wall member 600 is constituted by the two wall members 610 and 620 that can be connected to each other, and the wall member 800 is constituted by the two wall members 810 and 820 that can be connected to each other. Accordingly, it is possible to increase the depth of the space S2 and retain a large private space.

Also, in the ready-to-assemble house 2, the size of the space S2 can be changed by attaching or removing the wall members 620 and 820. If the wall members 620 and 820 have been removed, it is sufficient to insert the claw portions 614 b of the wall member 610 into the hole portions 78 a of the wall member 70 and the hole portions 38 c of the column member 30, and insert the claw portions 615 b into the hole portions 38 a of the column member 30. Also, it is sufficient to insert the claw portions 814 a of the wall member 810 into the hole portions 78 b of the wall member 70 and the hole portions 48 c of the column member 40, and insert the claw portions 815 a into the hole portions 48 a of the column member 40.

Furthermore, the column member 200 can be formed into a rectangular column by folding it along the folding lines L201 to L203. This column member 200 functions as a support column and raises the strength of the ready-to-assemble house 2 after assembly. Also, the column member 400 can be formed into a rectangular column by folding it along the folding lines L401 to L403. This column member 400 also functions as a support column and raises the strength of the ready-to-assemble house 2 after assembly. Other effects of the ready-to-assemble house 2 are similar to those of the ready-to-assemble house 1. Note that in the ready-to-assemble house 2 as well, a roof member that covers the space S2 from above may be provided similarly to the ready-to-assemble house 1.

Third Embodiment

FIG. 20 is a perspective view of a third embodiment of a ready-to-assemble house according to the present invention. Also, FIG. 21 is a plan view of the ready-to-assemble house in FIG. 20. A ready-to-assemble house 3 includes a column member 10′ (first column member), a column member 20′ (second column member), a column member 30′ (third column member), a column member 40′ (fourth column member), a wall member 50′ (first wall member), a wall member 60′ (second wall member), a wall member 70′ (third wall member), and a wall member 80′ (fourth wall member).

The ready-to-assemble house 3 has a space S1′ surrounded by these wall members 50′, 60′, 70′, and 80′. The size of the space S1′ is, for example, approximately 0.9 m in width (the gap between the wall member 60′ and the wall member 80′), approximately 1 m in depth (the gap between the wall member 50′ and the wall member 70′), and from approximately 1.2 m in height (the height of the wall members 60′ and 80′) to approximately 1.5 m in height (the height of the central portions of the wall members 50′ and 70′). This ready-to-assemble house 3 can be used as an enclosure for when disaster victims relieve themselves at an evacuation shelter or as a play space for children, for example. The column members 10′, 20′, 30′, and 40′ and the wall members 50′, 60′, 70′, and 80′ are each made of cardboard or heavy paper.

The wall member 60′ is configured such that a side end portion 60 a′ (first side end portion) is fixed to a side end portion 50 b′ (second side end portion) of the wall member 50′. The wall member 70′ is configured such that a side end portion 70 a′ (first side end portion) is fixed to a side end portion 60 b′ (second side end portion) of the wall member 60′. Also, the wall member 80′ is configured such that a side end portion 80 a′ (first side end portion) is fixed to a side end portion 70 b′ (second side end portion) of the wall member 70′, and a side end portion 80 b′ (second side end portion) is fixed to a side end portion 50 a′ (first side end portion) of the wall member 50′.

The column member 10′ is fixed to the side end portion 50 a′ of the wall member 50′ and the side end portion 80 b′ of the wall member 80′. The column member 20′ is fixed to the side end portion 50 b′ of the wall member 50′ and the side end portion 60 a′ of the wall member 60′. The column member 30′ is fixed to the side end portion 60 b′ of the wall member 60′ and the side end portion 70 a′ of the wall member 70′. Also, the column member 40′ is fixed to the side end portion 70 b′ of the wall member 70′ and the side end portion 80 a′ of the wall member 80′.

FIG. 22 is a plan view of the column member 10′. The column member 10′ is made of one piece of cardboard or heavy paper. Four folding lines L11′ to L14′ are formed in the column member 10′. The column member 10′ is formed into a rectangular column by folding it along these folding lines L11′ to L14′. Specifically, the column member 10′ is formed into a rectangular column by mountain-folding it along the folding lines L11′ to L14′ at approximately right angles (see FIGS. 20 and 21).

Furthermore, claw portions 14′, hole portions 18 a′ (first hole portions), hole portions 18 b′ (second hole portions), and hole portions 18 c′ (third hole portions) are formed in the column member 10′. The claw portions 14′ are formed so as to protrude from the outer periphery of the column member 10′. In the present embodiment, five claw portions 14′ are formed. The hole portions 18 a′ and 18 b′ are located between the folding line L12′ and the folding line L13′. In the present embodiment, five holes portions 18 a′ and five hole portions 18 b′ are provided. The hole portions 18 c′ are formed along the folding line L14′. In the present embodiment, five hole portions 18 c′ are formed. Also, a claw portion 19′ is formed so as to protrude from the upper end portion of the column member 10′. Specifically, the claw portion 19′ is formed on the upper end portion of the region between the folding line L12′ and the folding line L13′.

A gap d11′ between the folding line L11′ and the outer periphery of the column member 10′ is approximately equal to the gap between the folding line L12′ and the folding line L13′. Note that it is preferable that the gap d11′ is somewhat smaller than the gap between the folding line L12′ and the folding line L13′. Also, the gap between the folding line L11′ and the folding line L12′ is approximately equal to the gap between the folding line L13′ and the folding line L14′.

During assembly, the claw portions 14′ are mountain-folded along folding lines L15′ at approximately right angles and then inserted into the hole portions 18 c′. Accordingly, the rectangular column shape of the column member 10′ is maintained. Portions of the claw portions 14′ that protrude from the hole portions 18 c′ are contained inside the column member 10′ (see FIG. 21). Later-described claw portions 54 a′ of the wall member 50′ are inserted into the hole portions 18 a′. Also, later-described claw portions 85 b′ of the wall member 80′ are inserted into the hole portions 18 b′.

FIG. 23 is a plan view of the column member 20′. The column member 20′ is made of one piece of cardboard or heavy paper. The column member 20′ has a structure that is horizontally symmetrical with the column member 10′. Specifically, four folding lines L21′ to L24′ are formed in the column member 20′. The column member 20′ is formed into a rectangular column by folding it along these folding lines L21′ to L24′. Specifically, the column member 20′ is formed into a rectangular column by mountain-folding it along the folding lines L21′ to L24′ at approximately right angles (see FIGS. 20 and 21).

Furthermore, claw portions 24′, hole portions 28 a′ (first hole portions), hole portions 28 b′ (second hole portions), and hole portions 28 c′ (third hole portions) are formed in the column member 20′. The claw portions 24′ are formed so as to protrude from the outer periphery of the column member 20′. In the present embodiment, five claw portions 24′ are formed. The hole portions 28 a′ and 28 b′ are located between the folding line L22′ and the folding line L23′. In the present embodiment, five holes portions 28 a′ and five hole portions 28 b′ are provided. The hole portions 28 c′ are formed along the folding line L24′. In the present embodiment, five hole portions 28 c′ are formed. Also, a claw portion 29′ is formed so as to protrude from the upper end portion of the column member 20′. Specifically, the claw portion 29′ is formed on the upper end portion of the region between the folding line L22′ and the folding line L23′.

A gap d21′ between the folding line L21′ and the outer periphery of the column member 20′ is approximately equal to the gap between the folding line L22′ and the folding line L23′. Note that it is preferable that the gap d21′ is somewhat smaller than the gap between the folding line L22′ and the folding line L23′. Also, the gap between the folding line L21′ and the folding line L22′ is approximately equal to the gap between the folding line L23′ and the folding line L24′.

During assembly, the claw portions 24′ are mountain-folded along folding lines L25′ at approximately right angles and then inserted into the hole portions 28 c′. Accordingly, the rectangular column shape of the column member 20′ is maintained. Portions of the claw portions 24′ that protrude from the hole portions 28 c′ are contained inside the column member 20′ (see FIG. 21). Later-described claw portions 54 b′ of the wall member 50′ are inserted into the hole portions 28 a′. Also, later-described claw portions 65 a′ of the wall member 60′ are inserted into the hole portions 28 b′.

FIG. 24 is a plan view of the column member 30′. The column member 30′ is made of one piece of cardboard or heavy paper. The column member 30′ has the same structure as the column member 10′. Specifically, four folding lines L31′ to L34′ are formed in the column member 30′. The column member 30′ is formed into a rectangular column by folding it along these folding lines L31′ to L34′. Specifically, the column member 30′ is formed into a rectangular column by mountain-folding it along the folding lines L31′ to L34′ at approximately right angles (see FIGS. 20 and 21).

Furthermore, claw portions 34′, hole portions 38 a′ (first hole portions), hole portions 38 b′ (second hole portions), and hole portions 38 c′ (third hole portions) are formed in the column member 30′. The claw portions 34′ are formed so as to protrude from the outer periphery of the column member 30′. In the present embodiment, five claw portions 34′ are formed. The hole portions 38 a′ and 38 b′ are located between the folding line L32′ and the folding line L33′. In the present embodiment, five holes portions 38 a′ and five hole portions 38 b′ are provided. The hole portions 38 c′ are formed along the folding line L34′. In the present embodiment, five hole portions 38 c′ are formed. Also, a claw portion 39′ is formed so as to protrude from the upper end portion of the column member 30′. Specifically, the claw portion 39′ is formed on the upper end portion of the region between the folding line L32′ and the folding line L33′.

A gap d31′ between the folding line L31′ and the outer periphery of the column member 30′ is approximately equal to the gap between the folding line L32′ and the folding line L33′. Note that it is preferable that the gap d31′ is somewhat smaller than the gap between the folding line L32′ and the folding line L33′. Also, the gap between the folding line L31′ and the folding line L32′ is approximately equal to the gap between the folding line L33′ and the folding line L34′.

During assembly, the claw portions 34′ are mountain-folded along folding lines L35′ at approximately right angles and then inserted into the hole portions 38 c′. Accordingly, the rectangular column shape of the column member 30′ is maintained. Portions of the claw portions 34′ that protrude from the hole portions 38 c′ are contained inside the column member 30′ (see FIG. 21). Later-described claw portions 74 a′ of the wall member 70′ are inserted into the hole portions 38 a′. Also, later-described claw portions 65 b′ of the wall member 60′ are inserted into the hole portions 38 b′.

FIG. 25 is a plan view of the column member 40′. The column member 40′ is made of one piece of cardboard or heavy paper. The column member 40′ has the same structure as the column member 20′. Specifically, four folding lines L41′ to L44′ are formed in the column member 40′. The column member 40′ is formed into a rectangular column by folding it along these folding lines L41′ to L44′. Specifically, the column member 40′ is formed into a rectangular column by mountain-folding it along the folding lines L41′ to L44′ at approximately right angles (see FIGS. 20 and 21).

Furthermore, claw portions 44′, hole portions 48 a′ (first hole portions), hole portions 48 b′ (second hole portions), and hole portions 48 c′ (third hole portions) are formed in the column member 40′. The claw portions 44′ are formed so as to protrude from the outer periphery of the column member 40′. In the present embodiment, five claw portions 44′ are formed. The hole portions 48 a′ and 48 b′ are located between the folding line L42′ and the folding line L43′. In the present embodiment, five holes portions 48 a′ and five hole portions 48 b′ are provided. The hole portions 48 c′ are formed along the folding line L44′. In the present embodiment, five hole portions 48 c′ are formed. Also, a claw portion 49′ is formed so as to protrude from the upper end portion of the column member 40′. Specifically, the claw portion 49′ is formed on the upper end portion of the region between the folding line L42′ and the folding line L43′.

A gap d41′ between the folding line L41′ and the outer periphery of the column member 40′ is approximately equal to the gap between the folding line L42′ and the folding line L43′. Note that it is preferable that the gap d41′ is somewhat smaller than the gap between the folding line L42′ and the folding line L43′. Also, the gap between the folding line L41′ and the folding line L42′ is approximately equal to the gap between the folding line L43′ and the folding line L44′.

During assembly, the claw portions 44′ are mountain-folded along folding lines L45′ at approximately right angles and then inserted into the hole portions 48 c′. Accordingly, the rectangular column shape of the column member 40′ is maintained. Portions of the claw portions 44′ that protrude from the hole portions 48 c′ are contained inside the column member 40′ (see FIG. 21). Later-described claw portions 74 b′ of the wall member 70′ are inserted into the hole portions 48 a′. Also, later-described claw portions 85 a′ of the wall member 80′ are inserted into the hole portions 48 b′.

FIG. 26 is a plan view of the wall member 50′. The wall member 50′ is made of one piece of cardboard or heavy paper. The wall member 50′ has a horizontally symmetrical structure, with the exception of a door 52′. Claw portions 54 a′ (first claw portions) are formed on a side end portion 50 a′ of the wall member 50′. In the present embodiment, five claw portions 54 a′ are formed. During assembly, the claw portions 54 a′ are inserted into later-described hole portions 88 b′ of the wall member 80′ and the hole portions 18 a′ of the column member 10′. Accordingly, the wall member 50′ is fixed to the column member 10′. Portions of the claw portions 54 a′ that protrude from the hole portions 18 a′ are contained inside the column member 10′ (see FIG. 21).

Claw portions 54 b′ (second claw portions) are formed on a side end portion 50 b′ of the wall member 50′. In the present embodiment, five claw portions 54 b′ are formed. During assembly, the claw portions 54 b′ are inserted into later-described hole portions 68 a′ of the wall member 60′ and the hole portions 28 a′ of the column member 20′. Accordingly, the wall member 50′ is fixed to the column member 20′. Portions of the claw portions 54 b′ that protrude from the hole portions 28 a′ are contained inside the column member 20′ (see FIG. 21).

A folding line L51′ and a cut line C51′ are formed in the central portion of the wall member 50′. The door 52′ is obtained by cutting along the cut line C51′. The door 52′ is opened by folding it along the folding line L51′, thus making it possible to enter and exit the space S1′ (see FIG. 20). A protrusion portion 52 a′ is provided in the door 52′. The protrusion portion 52 a′ functions as a grip for the door 52′. Furthermore, a claw portion 59′ is formed so as to protrude from the upper end portion of the wall member 50′.

FIG. 27 is a plan view of the wall member 60′. The wall member 60′ is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. Hole portions 68 a′ are formed on a side end portion 60 a′ of the wall member 60′. In the present embodiment, five hole portions 68 a′ are formed. During assembly, the claw portions 54 b′ of the wall member 50′ are inserted into the hole portions 68 a′. A gap d61 a′ between the hole portions 68 a′ and the outer periphery of the wall member 60′ is approximately equal to a gap d22′ between the hole portions 28 a′ and the folding line L22′ in the column member 20′ (see FIG. 23). Furthermore, folding lines L61 a′ and cut lines C61 a′ are formed in the side end portion 60 a′. A gap d62 a′ between the folding lines L61 a′ and the hole portions 68 a′ is approximately equal to a gap d23′ between the hole portions 28 a′ and the hole portions 28 b′ in the column member 20′ (see FIG. 23).

Hole portions 68 b′ are formed on a side end portion 60 b′ of the wall member 60′. In the present embodiment, five hole portions 68 b′ are formed. During assembly, later-described claw portions 74 a′ of the wall member 70′ are inserted into the hole portions 68 b′. A gap d61 b′ between the hole portions 68 b′ and the outer periphery of the wall member 60′ is approximately equal to a gap d32′ between the hole portions 38 a′ and the folding line L32′ in the column member 30′ (see FIG. 24). Furthermore, folding lines L61 b′ and cut lines C61 b′ are formed in the side end portion 60 b′. A gap d62 b′ between the folding lines L61 b′ and the hole portions 68 b′ is approximately equal to a gap d33′ between the hole portions 38 a′ and the hole portions 38 b′ in the column member 30′ (see FIG. 24).

Claw portions 65 a′ (first claw portions) and claw portions 65 b′ (second claw portions) are formed by cutting along the cut lines C61 a′ and C61 b′ and then valley-folding the claw portions along the folding lines L61 a′ and L61 b′ at approximately right angles. In the present embodiment, five claw portions 65 a′ and five claw portions 65 b′ are formed. During assembly, the claw portions 65 a′ are inserted into the hole portions 28 b′ of the column member 20′. Accordingly, the wall member 60′ is fixed to the column member 20′. Portions of the claw portions 65 a′ that protrude from the hole portions 28 b′ are contained inside the column member 20′ (see FIG. 21). Also, the claw portions 65 b′ are inserted into the hole portions 38 b′ of the column member 30′. Accordingly, the wall member 60′ is fixed to the column member 30′. Portions of the claw portions 65 b′ that protrude from the hole portions 38 b′ are contained inside the column member 30′ (see FIG. 21).

Folding lines L62 a′ and L62 b′ and cut lines C62 a′ and C62 b′ are formed in the central portion of the wall member 60′. Claw portions 66 a′ and 66 b′ are formed by cutting along the cut lines C62 a′ and C62 b′ and then valley-folding the claw portions along the folding lines L62 a′ and L62 b′ at approximately right angles. During assembly, the claw portions 66 a′ and 66 b′ are respectively inserted into later-described hole portions 96 b′ and 96 c′ of the roof member 90′.

FIG. 28 is a plan view of the wall member 70′. The wall member 70′ is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. The structure of the wall member 70′ is the same as the structure of the wall member 50′, with the exception that the folding line L51′ and the cut line C51′ are not formed. Specifically, claw portions 74 a′ (first claw portions) are formed on a side end portion 70 a′ of the wall member 70′. In the present embodiment, five claw portions 74 a′ are formed. During assembly, the claw portions 74 a′ are inserted into the hole portions 68 b′ of the wall member 60′ and the hole portions 38 a′ of the column member 30′. Accordingly, the wall member 70′ is fixed to the column member 30′. Portions of the claw portions 74 a′ that protrude from the hole portions 38 a′ are contained inside the column member 30′ (see FIG. 21).

Claw portions 74 b′ (second claw portions) are formed on a side end portion 70 b′ of the wall member 70′. In the present embodiment, five claw portions 74 b′ are formed. During assembly, the claw portions 74 b′ are inserted into later-described hole portions 88 a′ of the wall member 80′ and the hole portions 48 a′ of the column member 40′. Accordingly, the wall member 70′ is fixed to the column member 40′. Portions of the claw portions 74 b′ that protrude from the hole portions 48 a′ are contained inside the column member 40′ (see FIG. 21). Furthermore, a claw portion 79′ is formed so as to protrude from the upper end portion of the wall member 70′ in the central portion of the wall member 70′.

FIG. 29 is a plan view of the wall member 80′. The wall member 80′ is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. The structure of the wall member 80′ is the same as the structure of the wall member 60′. Specifically, hole portions 88 a′ are formed on a side end portion 80 a′ of the wall member 80′. In the present embodiment, five hole portions 88 a′ are formed. During assembly, the claw portions 74 b′ of the wall member 70′ are inserted into the hole portions 88 a′. A gap d81 a′ between the hole portions 88 a′ and the outer periphery of the wall member 80′ is approximately equal to a gap d42′ between the hole portions 48 a′ and the folding line L42′ in the column member 40′ (see FIG. 25). Furthermore, folding lines L81 a′ and cut lines C81 a′ are formed in the side end portion 80 a′. A gap d82 a′ between the folding lines L81 a′ and the hole portions 88 a′ is approximately equal to a gap d43′ between the hole portions 48 a′ and the hole portions 48 b′ in the column member 40′ (see FIG. 25).

Hole portions 88 b′ are formed on a side end portion 80 b′ of the wall member 80′. In the present embodiment, five hole portions 88 b′ are formed. During assembly, the claw portions 54 a′ of the wall member 50′ are inserted into the hole portions 88 b′. A gap d81 b′ between the hole portions 88 b′ and the outer periphery of the wall member 80′ is approximately equal to a gap d12′ between the hole portions 18 a′ and the folding line L12′ in the column member 10′ (see FIG. 22). Furthermore, folding lines L81 b′ and cut lines C81 b′ are formed in the side end portion 80 b′. A gap d82 b′ between the folding lines L81 b′ and the hole portions 88 b′ is approximately equal to a gap d13′ between the hole portions 18 a′ and the hole portions 18 b′ in the column member 10′ (see FIG. 22).

Claw portions 85 a′ (first claw portions) and claw portions 85 b′ (second claw portions) are formed by cutting along the cut lines C81 a′ and C81 b′ and then valley-folding the claw portions along the folding lines L81 a′ and L81 b′ at approximately right angles. In the present embodiment, five claw portions 85 a′ and five claw portions 85 b′ are formed. During assembly, the claw portions 85 a′ are inserted into the hole portions 48 b′ of the column member 40′. Accordingly, the wall member 80′ is fixed to the column member 40′. Portions of the claw portions 85 a′ that protrude from the hole portions 48 b′ are contained inside the column member 40′ (see FIG. 21). Also, the claw portions 85 b′ are inserted into the hole portions 18 b′ of the column member 10′. Accordingly, the wall member 80′ is fixed to the column member 10′. Portions of the claw portions 85 b′ that protrude from the hole portions 18 b′ are contained inside the column member 10′ (see FIG. 21).

Folding lines L82 a′ and L82 b′ and cut lines C82 a′ and C82 b′ are formed in the central portion of the wall member 80′. Claw portions 86 a′ and 86 b′ are formed by cutting along the cut lines C82 a′ and C82 b′ and then valley-folding the claw portions along the folding lines L82 a′ and L82 b′ at approximately right angles. During assembly, the claw portions 86 a′ and 86 b′ are respectively inserted into later-described hole portions 96 d′ and 96 a′ of the roof member 90′.

As shown in FIGS. 30 and 31, the ready-to-assemble house 3 further includes the roof member 90′ that covers the space S1′ from above. FIG. 31 is a cross-sectional view taken along line XXXI-XXXI in FIG. 30. The roof member 90′ is configured such that a side end portion 90 a′ (first side end portion) has a J-shaped cross-section. The side end portion 90 a′ is located between the column member 10′ and the column member 40′. Similarly, the roof member 90′ is configured such that a side end portion 90 b′ (second side end portion) has a J-shaped cross-section. The side end portion 90 b′ is located between the column member 20′ and the column member 30′. Note that above-described FIGS. 20 and 21 show the ready-to-assemble house 3 in a state in which the roof member 90′ has been removed.

FIG. 32 is a plan view of the roof member 90′. The roof member 90′ is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. Folding lines L91 a′ and L91 b′ are formed in the central portion of the roof member 90′. Hole portions 99 a′ and 99 b′ are formed in the region between the folding line L91 a′ and the folding line L91 b′. During assembly, the claw portion 59′ of the wall member 50′ is inserted into the hole portion 99 a′. Also, the claw portion 79′ of the wall member 70′ is inserted into the hole portion 99 b′.

Folding lines L92 a′, L93 a′, and L94 a′ are formed in the side end portion 90 a′ of the roof member 90′. The gap between the folding line L91 a′ and the folding line L92 a′ is approximately equal to a length d51 a′ of the inclined side of the wall member 50′ (see FIG. 26) and a length d71 b′ of the inclined side of the wall member 70′ (see FIG. 28). The gap between the folding line L93 a′ and the folding line L94 a′ is approximately equal to the gap between the folding line L13′ and the folding line L14′ of the column member 10′ (see FIG. 22) and the gap between the folding line L43′ and the folding line L44′ of the column member 40′ (see FIG. 25). The lengths of the folding lines L92 a′, L93 a′, and L94 a′ are approximately equal to the gap between the column member 10′ and the column member 40′.

The folding lines L95 a′ and L95 d′ are formed on an extension line of the folding line L92 a′. Hole portions 98 a′ and 98 d′ are respectively formed along the folding lines L95 a′ and L95 d′. During assembly, the claw portion 19′ of the column member 10′ is inserted into the hole portion 98 a′. Also, the claw portion 49′ of the column member 40′ is inserted into the hole portion 98 d′.

Hole portions 96 a′ and 96 d′ are formed in the region between the folding line L92 a′ and the folding line L93 a′. The claw portion 86 b′ of the wall member 80′ is inserted into the hole portion 96 a′. Also, the claw portion 86 a′ of the wall member 80′ is inserted into the hole portion 96 d′. A gap d91 a′ between the folding line L92 a′ and the hole portion 96 a′ is approximately equal to a gap d83 b′ between the folding line L82 b′ and the upper end portion of the wall member 80′ (see FIG. 29). Similarly, a gap d91 d′ between the folding line L92 a′ and the hole portion 96 d′ is approximately equal to a gap d83 a′ between the folding line L82 a′ and the upper end portion of the wall member 80′ (see FIG. 29).

Folding lines L96 a′ and L96 d′ are formed in the region between the folding line L94 a′ and the outer periphery of the roof member 90′. The side end portion 90 a′ having a J-shaped cross-section is obtained by cutting along the cut lines C91 a′ and C91 d′, mountain-folding the side end portion along the folding lines L91 a′ and L92 a′, and also valley-folding the side end portion along the folding lines L93 a′, L94 a′, L95 a′, and L95 d′. Furthermore, claw portions 94 a′ and 94 d′ are formed by valley-folding the claw portions along the folding lines L96 a′ and L96 d′ at approximately right angles.

During assembly, the claw portion 94 a′ is, along with the claw portion 14′, inserted into a hole portion 18 c′ of the column member 10′ (specifically, the hole portion 18 c′ at the highest position among the five hole portions 18 c′). Also, the claw portion 94 d′ is, along with the claw portion 44′, inserted into a hole portion 48 c′ of the column member 40′ (specifically, the hole portion 48 c′ at the highest position among the five hole portions 48 c′). The difference between a gap d92 a′ between the folding line L92 a′ and the folding line L93 a′ and a gap d93 a′ between the folding line L94 a′ and the outer periphery of the roof member 90′ (difference d92 a′-d93 a′) is approximately equal to a gap d14′ between the hole portions 18 c′ and the upper end portion of the column member 10′ (see FIG. 22) and a gap d44′ between the hole portions 48 c′ and the upper end portion of the column member 40′ (see FIG. 25).

Folding lines L92 b′, L93 b′, and L94 b′ are formed in the side end portion 90 b′ of the roof member 90′. The gap between the folding line L91 b′ and the folding line L92 b′ is approximately equal to a length d51 b′ of the inclined side of the wall member 50′ (see FIG. 26) and a length d71 a′ of the inclined side of the wall member 70′ (see FIG. 28). The gap between the folding line L93 b′ and the folding line L94 b′ is approximately equal to the gap between the folding line L23′ and the folding line L24′ of the column member 20′ (see FIG. 23) and the gap between the folding line L33′ and the folding line L34′ of the column member 30′ (see FIG. 24). The lengths of the folding lines L92 b′, L93 b′, and L94 b′ are approximately equal to the gap between the column member 20′ and the column member 30′.

The folding lines L95 b′ and L95 c′ are formed on an extension line of the folding line L92 b′. Hole portions 98 b′ and 98 c′ are formed along the folding lines L95 b′ and L95 c′. During assembly, the claw portion 29′ of the column member 20′ is inserted into the hole portion 98 b′. Also, the claw portion 39′ of the column member 30′ is inserted into the hole portion 98 c′.

Hole portions 96 b′ and 96 c′ are formed in the region between the folding line L92 b′ and the folding line L93 b′. The claw portion 66 a′ of the wall member 60′ is inserted into the hole portion 96 b′. Also, the claw portion 66 b′ of the wall member 60′ is inserted into the hole portion 96 c′. A gap d91 b′ between the folding line L92 b′ and the hole portion 96 b′ is approximately equal to a gap d63 a′ between the folding line L62 a′ and the upper end portion of the wall member 60′ (see FIG. 27). Similarly, a gap d91 c′ between the folding line L92 b′ and the hole portion 96 c′ is approximately equal to a gap d63 b′ between the folding line L62 b′ and the upper end portion of the wall member 60′ (see FIG. 27).

Folding lines L96 b′ and L96 c′ are formed in the region between the folding line L94 b′ and the outer periphery of the roof member 90′. The side end portion 90 b′ having a J-shaped cross-section is obtained by cutting along the cut lines C91 b′ and C91 c′, mountain-folding the side end portion along the folding lines L91 b′ and L92 b′, and also valley-folding the side end portion along the folding lines L93 b′, L94 b′, L95 b′, and L95 c′. Furthermore, claw portions 94 b′ and 94 c′ are formed by valley-folding the claw portions along the folding lines L96 b′ and L96 c′ at approximately right angles.

During assembly, the claw portion 94 b′ is, along with the claw portion 24′, inserted into a hole portion 28 c′ of the column member 20′ (specifically, the hole portion 28 c′ at the highest position among the five hole portions 28 c′). Also, the claw portion 94 c′ is, along with the claw portion 34′, inserted into a hole portion 38 c′ of the column member 30′ (specifically, the hole portion 38 c′ at the highest position among the five hole portions 38 c′). The difference between a gap d92 b′ between the folding line L92 b′ and the folding line L93 b′ and a gap d93 b′ between the folding line L94 b′ and the outer periphery of the roof member 90′ (difference d92 b′-d93 b′) is approximately equal to a gap d24′ between the hole portions 28 c′ and the upper end portion of the column member 20′ (see FIG. 23) and a gap d34′ between the hole portions 38 c′ and the upper end portion of the column member 30′ (see FIG. 24).

Effects of the ready-to-assemble house 3 will be described below. In the ready-to-assemble house 3, the side end portion 60 a′ of the wall member 60′ is fixed to the side end portion 50 b′ of the wall member 50′, the side end portion 70 a′ of the wall member 70′ is fixed to the side end portion 60 b′ of the wall member 60′, the side end portion 80 a′ of the wall member 80′ is fixed to the side end portion 70 b′ of the wall member 70′, and the side end portion 80 b′ of the wall member 80′ is fixed to the side end portion 50 a′ of the wall member 50′, thus forming the space S1′ surrounded by the wall members 50′, 60′, 70′, and 80′. The ready-to-assemble house 3 obtains the space S1′ surrounded on four sides in this way, thus making it possible to retain sufficient private space. Accordingly, it is possible to sufficiently protect the privacy of the user of the ready-to-assemble house 3.

Also, in the present embodiment, the top of the space S1′ is also covered by the roof member 90′. Accordingly, it is possible to more substantially protect the privacy of the user of the ready-to-assemble house 3.

Furthermore, the column member 10′ can be formed into a rectangular column by folding it along the folding lines L11′ to L14′. This column member 10′ functions as a support column and raises the strength of the ready-to-assemble house 3 after assembly. Accordingly, the ready-to-assemble house 3 having sufficient strength is realized. The ready-to-assemble house 3 having superior strength in this way is also suited to use as a play space for children.

In the present embodiment, the column member 20′ can also be formed into a rectangular column by folding it along the folding lines L21′ to L24′. Accordingly, the strength of the ready-to-assemble house 3 is raised even further. Similarly, the column member 30′ can be formed into a rectangular column by folding it along the folding lines L31′ to L34′, and the column member 40′ can be formed into a rectangular column by folding it along the folding lines L41′ to L44′. These column members 30′ and 40′ also contribute to improvement in the strength of the ready-to-assemble house 3.

The column member 10′ is configured such that its rectangular column shape is maintained due to the claw portions 14′ being inserted into the hole portions 18 c′. Accordingly, the shape of the column member 10′ after assembly can be maintained with a simple structure. Here, portions of the claw portions 14′ that protrude from the hole portions 18 c′ are contained inside the column member 10′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 14′. Also, hiding the claw portions 14′ inside the column member 10′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

The column member 20′ is configured such that its rectangular column shape is maintained due to the claw portions 24′ being inserted into the hole portions 28 c′. Accordingly, the shape of the column member 20′ after assembly can be maintained with a simple structure. Here, portions of the claw portions 24′ that protrude from the hole portions 28 c′ are contained inside the column member 20′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 24′. Also, hiding the claw portions 24′ inside the column member 20′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

The column member 30′ is configured such that its rectangular column shape is maintained due to the claw portions 34′ being inserted into the hole portions 38 c′. Accordingly, the shape of the column member 30′ after assembly can be maintained with a simple structure. Here, portions of the claw portions 34′ that protrude from the hole portions 38 c′ are contained inside the column member 30′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 34′. Also, hiding the claw portions 34′ inside the column member 30′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

The column member 40′ is configured such that its rectangular column shape is maintained due to the claw portions 44′ being inserted into the hole portions 48 c′. Accordingly, the shape of the column member 40′ after assembly can be maintained with a simple structure. Here, portions of the claw portions 44′ that protrude from the hole portions 48 c′ are contained inside the column member 40′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 44′. Also, hiding the claw portions 44′ inside the column member 40′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

The wall member 50′ is fixed to the column member 10′ due to the claw portions 54 a′ being inserted into the hole portions 18 a′ of the column member 10′. Accordingly, the wall member 50′ and the column member 10′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 54 a′ that protrude from the hole portions 18 a′ are contained inside the column member 10′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 54 a′. Also, hiding the claw portions 54 a′ inside the column member 10′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

Similarly, the wall member 50′ is fixed to the column member 20′ due to the claw portions 54 b′ being inserted into the hole portions 28 a′ of the column member 20′. Accordingly, the wall member 50′ and the column member 20′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 54 b′ that protrude from the hole portions 28 a′ are contained inside the column member 20′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 54 b′. Also, hiding the claw portions 54 b′ inside the column member 20′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

The wall member 70′ is fixed to the column member 30′ due to the claw portions 74 a′ being inserted into the hole portions 38 a′ of the column member 30′. Accordingly, the wall member 70′ and the column member 30′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 74 a′ that protrude from the hole portions 38 a′ are contained inside the column member 30′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 74 a′. Also, hiding the claw portions 74 a′ inside the column member 30′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

Similarly, the wall member 70′ is fixed to the column member 40′ due to the claw portions 74 b′ being inserted into the hole portions 48 a′ of the column member 40′. Accordingly, the wall member 70′ and the column member 40′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 74 b′ that protrude from the hole portions 48 a′ are contained inside the column member 40′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 74 b′. Also, hiding the claw portions 74 b′ inside the column member 40′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

The wall member 60′ is fixed to the column member 20′ due to the claw portions 65 a′ being inserted into the hole portions 28 b′ of the column member 20′. Accordingly, the wall member 60′ and the column member 20′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 65 a′ that protrude from the hole portions 28 b′ are contained inside the column member 20′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 65 a′. Also, hiding the claw portions 65 a′ inside the column member 20′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

Similarly, the wall member 60′ is fixed to the column member 30′ due to the claw portions 65 b′ being inserted into the hole portions 38 b′ of the column member 30′. Accordingly, the wall member 60′ and the column member 30′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 65 b′ that protrude from the hole portions 38 b′ are contained inside the column member 30′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 65 b′. Also, hiding the claw portions 65 b′ inside the column member 30′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

The wall member 80′ is fixed to the column member 40′ due to the claw portions 85 a′ being inserted into the hole portions 48 b′ of the column member 40′. Accordingly, the wall member 80′ and the column member 40′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 85 a′ that protrude from the hole portions 48 b′ are contained inside the column member 40′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 85 a′. Also, hiding the claw portions 85 a′ inside the column member 40′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

Similarly, the wall member 80′ is fixed to the column member 10′ due to the claw portions 85 b′ being inserted into the hole portions 18 b′ of the column member 10′. Accordingly, the wall member 80′ and the column member 10′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 85 b′ that protrude from the hole portions 18 b′ are contained inside the column member 10′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 3 from becoming caught on the claw portions 85 b′. Also, hiding the claw portions 85 b′ inside the column member 10′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 3.

The roof member 90′ is configured such that the side end portions 90 a′ and 90 b′ have a J-shaped cross-section. Accordingly, in the ready-to-assemble house 3 after assembly, the side end portions 90 a′ and 90 b′ can be used as a storage portion for small items and the like. If the ready-to-assemble house 3 is used as a play space for children, pens for drawing on the ready-to-assemble house 3, for example, can be stored in the side end portions 90 a′ and 90 b′. Note that it is not essential for the side end portions 90 a′ and 90 b′ to be given a J-shaped cross-section. Also, it is possible for only either the side end portion 90 a′ or the side end portion 90 b′ to be given a J-shaped cross-section.

The column members 10′, 20′, 30′, and 40′, the wall members 50′, 60′, 70′, and 80′, and the roof member 90′ are made of cardboard or heavy paper. For this reason, the ready-to-assemble house 3 can be easily disposed of. Also, due to cardboard and heavy paper being relatively light-weight, the ready-to-assemble house 3 can be easily transported and moved before and after assembly. In particular, if these members are made of cardboard, a ready-to-assemble house 3 having a superior deodorization effect and sound-proofing effect is realized.

Furthermore, the column members 10′, 20′, 30′, and 40′, the wall members 50′, 60′, 70′, and 80′, and the roof member 90′ are each made of a single flat piece of cardboard or heavy paper before assembly. For this reason, it is possible to reduce the amount of space required for storage of the ready-to-assemble house 3 before assembly.

The ready-to-assemble house 3 is configured to be assembled by folding members along folding lines and cutting members along cut lines. For this reason, a ready-to-assemble house 3 that is easy to assemble and safe is realized. On the other hand, a certain amount of spatial recognition is required for assembly, and therefore the ready-to-assemble house 3 can be favorably used as an educational toy for children.

Fourth Embodiment

FIG. 33 is a perspective view of a fourth embodiment of a ready-to-assemble house according to the present invention. Also, FIG. 34 is a plan view of the ready-to-assemble house in FIG. 33. A ready-to-assemble house 4 includes a column member 10′ (first column member), a column member 20′ (second column member), a column member 30′ (third column member), a column member 40′ (fourth column member), a column member 200′ (fifth column member), a column member 400′ (sixth column member), a wall member 50′ (first wall member), a wall member 600′ (second wall member), a wall member 70′ (third wall member), and a wall member 800′ (fourth wall member).

The size of a space S2′ is , for example, approximately 0.9 m in width (the gap between the wall member 600′ and the wall member 800′), approximately 2 m in depth (the gap between the wall member 50′ and the wall member 70′), and from approximately 1.2 m in height (the height of the wall members 600′ and 800′) to approximately 1.5 m in height (the height of the central portions of the wall members 50′ and 70′). This ready-to-assemble house 4 can be used as an enclosure for when disaster victims sleep at an evacuation shelter or as a play space for children, for example. The structures of the column members 10′, 20′, 30′, and 40′ and the structures of the wall members 50′ and 70′ are as described in the ready-to-assemble house 3. The column members 200′ and 400′ and the wall members 600′ and 800′ are each made of cardboard or heavy paper.

The wall member 600′ is constituted by a wall member 610′ (first sub wall member) and a wall member 620′ (second sub wall member) that can be connected to each other. The wall members 610′ and 620′ are made of cardboard or heavy paper. Similarly, the wall member 800′ is constituted by a wall member 810′ (third sub wall member) and a wall member 820′ (fourth sub wall member) that can be connected to each other. The wall members 810′ and 820′ are also made of cardboard or heavy paper.

FIG. 35 is a plan view of the column member 200′. The column member 200′ is made of one piece of cardboard or heavy paper. Four folding lines L201′ to L204′ are formed in the column member 200′. The column member 200′ is formed into a rectangular column by folding it along these folding lines L201′ to L204′. Specifically, the column member 200′ is formed into a rectangular column by mountain-folding it along the folding lines L201′ to L204′ at approximately right angles (see FIGS. 33 and 34).

Furthermore, claw portions 204′, hole portions 208 a′ (first hole portions), hole portions 208 b′ (second hole portions), and hole portions 208 c′ (third hole portions) are formed in the column member 200′. The claw portions 204′ are formed so as to protrude from the outer periphery of the column member 200′. In the present embodiment, five claw portions 204′ are formed. The hole portions 208 a′ and 208 b′ are formed between the folding line L202′ and the folding line L203′. In the present embodiment, five holes portions 208 a′ and five hole portions 208 b′ are formed. The hole portions 208 c′ are formed along the folding line L204′. In the present embodiment, five hole portions 208 c′ are formed. Also, a claw portion 209′ is formed so as to protrude from the upper end portion of the column member 200′. Specifically, the claw portion 209′ is formed on the upper end portion of the region between the folding line L202′ and the folding line L203′.

A gap d201′ between the folding line L201′ and the outer periphery of the column member 200′ is approximately equal to the gap between the folding line L202′ and the folding line L203′. Note that it is preferable that the gap d201′ is somewhat smaller than the gap between the folding line L202′ and the folding line L203′. Also, the gap between the folding line L201′ and the folding line L202′ is approximately equal to the gap between the folding line L203′ and the folding line L204′.

During assembly, the claw portions 204′ are mountain-folded along folding lines L205′ at approximately right angles and then inserted into the hole portions 208 c′. Accordingly, the rectangular column shape of the column member 200′ is maintained. Portions of the claw portions 204′ that protrude from the hole portions 208 c′ are contained inside the column member 200′ (see FIG. 34). Later-described claw portions 615 b′ of the wall member 610′ and claw portions 624′ of the wall member 620′ are inserted into the hole portions 208 a′. Also, claw portions 625 a′ of the wall member 620′ are inserted into the hole portions 208 b′.

FIG. 36 is a plan view of the column member 400′. The column member 400′ is made of one piece of cardboard or heavy paper. The column member 400′ has a structure that is horizontally symmetrical with the column member 200′. Specifically, four folding lines L401′ to L404′ are formed in the column member 400′. The column member 400′ is formed into a rectangular column by folding it along these folding lines L401′ to L404′. Specifically, the column member 400′ is formed into a rectangular column by mountain-folding it along the folding lines L401′ to L404′ at approximately right angles (see FIGS. 33 and 34).

Furthermore, claw portions 404′, hole portions 408 a′ (first hole portions), hole portions 408 b′ (second hole portions), and hole portions 408 c′ (third hole portions) are formed in the column member 400′. The claw portion 404′ is formed so as to protrude from the outer periphery of the column member 400′. In the present embodiment, five claw portions 404′ are formed. The hole portions 408 a′ and 408 b′ are located between the folding line L402′ and the folding line L403′. In the present embodiment, five holes portions 408 a′ and five hole portions 408 b′ are provided. The hole portions 408 c′ are formed along the folding line L404′. In the present embodiment, five hole portions 408 c′ are formed. Also, a claw portion 409′ is formed so as to protrude from the upper end portion of the column member 400′. Specifically, the claw portion 409′ is formed on the upper end portion of the region between the folding line L402′ and the folding line L403′.

A gap d401′ between the folding line L401′ and the outer periphery of the column member 400′ is approximately equal to the gap between the folding line L402′ and the folding line L403′. Note that it is preferable that the gap d401′ is somewhat smaller than the gap between the folding line L402′ and the folding line L403′. Also, the gap between the folding line L401′ and the folding line L402′ is approximately equal to the gap between the folding line L403′ and the folding line L404′.

During assembly, the claw portions 404′ are mountain-folded along folding lines L405′ at approximately right angles and then inserted into the hole portions 408 c′. Accordingly, the rectangular column shape of the column member 400′ is maintained. Portions of the claw portions 404′ that protrude from the hole portions 408 c′ are contained inside the column member 400′ (see FIG. 34). Later-described claw portions 815 a′ of the wall member 810′ and claw portions 824′ of the wall member 820′ are inserted into the hole portions 408 a′. Also, claw portions 825 b′ of the wall member 820′ are inserted into the hole portions 408 b′.

FIG. 37 is a plan view of the wall member 610′. The structure of the wall member 610′ is the same as the structure of the wall member 60′. Specifically, hole portions 618 a′ are formed on a side end portion 610 a′ of the wall member 610′. In the present embodiment, five hole portions 618 a′ are formed. During assembly, the claw portions 54 b′ of the wall member 50′ are inserted into the hole portions 618 a′. A gap d611 a′ between the hole portions 618 a′ and the outer periphery of the wall member 610′ is approximately equal to a gap d22′ between the hole portions 28 a′ and the folding line L22′ in the column member 20′ (see FIG. 23). Furthermore, folding lines L611 a′ and cut lines C611 a′ are formed in the side end portion 610 a′. A gap d612 a′ between the folding lines L611 a′ and the hole portions 618 a′ is approximately equal to a gap d23′ between the hole portions 28 a′ and the hole portions 28 b′ in the column member 20′ (see FIG. 23).

Hole portions 618 b′ are formed on a side end portion 610 b′ of the wall member 610′. In the present embodiment, five hole portions 618 b′ are formed. During assembly, later-described claw portions 625 a′ of the wall member 620′ are inserted into the hole portions 618 b′. A gap d611 b′ between the hole portions 618 b′ and the outer periphery of the wall member 610′ is approximately equal to a gap d32′ between the hole portions 38 a′ and the folding line L32′ in the column member 30′ (see FIG. 24). Furthermore, folding lines L611 b′ and cut lines C611 b′ are formed in the side end portion 610 b′. A gap d612 b′ between the folding lines L611 b′ and the hole portions 618 b′ is approximately equal to a gap d203′ between the hole portions 208 a′ and the hole portions 208 b′ in the column member 200′ (see FIG. 35), and the gap d33′ between the hole portions 38 a′ and the hole portions 38 b′ in the column member 30′ (see FIG. 24).

Claw portions 615 a′ and 615 b′ are formed by cutting along the cut lines C611 a′ and C611 b′ and then valley-folding the claw portions along the folding lines L611 a′ and L611 b′ at approximately right angles. In the present embodiment, five claw portions 615 a′ and five claw portions 615 b′ are formed. During assembly, the claw portions 615 a′ are inserted into the hole portions 28 b′ of the column member 20′. Accordingly, the wall member 610′ is fixed to the column member 20′. Portions of the claw portions 615 a′ that protrude from the hole portions 28 b′ are contained inside the column member 20′ (see FIG. 34). Also, the claw portions 615 b′ are inserted into the hole portions 208 a′ of the column member 200′. Accordingly, the wall member 610′ is fixed to the column member 200′. Portions of the claw portions 615 b′ that protrude from the hole portions 208 a′ are contained inside the column member 200′ (see FIG. 34).

Folding lines L612 a′ and L612 b′ and cut lines C612 a′ and C612 b′ are formed in the central portion of the wall member 610′. Claw portions 616 a′ and 616 b′ are formed by cutting along the cut lines C612 a′ and C612 b′ and then valley-folding the claw portions along the folding lines L612 a′ and L612 b′ at approximately right angles. The structures of the claw portions 616 a′ and 616 b′ are the same as the structures of the claw portions 66 a′ and 66 b′ of the wall member 60′.

FIG. 38 is a plan view of the wall member 620′. The wall member 620′ is made of one piece of cardboard or heavy paper. Claw portions 624′ are formed on a side end portion 620 a′ of the wall member 620′. In the present embodiment, five claw portions 624′ are formed. During assembly, the claw portions 624′ are valley-folded along the folding lines L622′ at approximately right angles and then inserted into the hole portions 208 a′ of the column member 200′ via opening portions of the wall member 610′ (opening portions created when the claw portions 615 b′ are formed). Accordingly, the wall member 620′ is connected to the wall member 610′ and fixed to the column member 200′. Portions of the claw portions 624′ that protrude from the hole portions 208 a′ are contained inside the column member 200′ (see FIG. 34).

Furthermore, folding lines L621 a′ and cut lines C621 a′ are formed in the side end portion 620 a′. A gap d621′ between the folding lines L621 a′ and the outer periphery of the wall member 620′ is approximately equal to the gap d612 b′ in the wall member 610′ (see FIG. 37) and the gap d203′ in the column member 200′ (see FIG. 35). The claw portions 625 a′ are formed by cutting along the cut lines C621 a′ and then valley-folding the claw portions along the folding lines L621 a′ at approximately right angles. In the present embodiment, five claw portions 625 a′ are formed. During assembly, the claw portions 625 a′ are inserted into the hole portions 618 b′ of the wall member 610′ and the hole portions 208 b′ of the column member 200′. Accordingly, the wall member 620′ is connected to the wall member 610′ and fixed to the column member 200′. Portions of the claw portions 625 a′ that protrude from the hole portions 208 b′ are contained inside the column member 200′ (see FIG. 34).

Hole portions 628′ are formed on a side end portion 620 b′ of the wall member 620′. In the present embodiment, five hole portions 628′ are formed. During assembly, the claw portions 74 a′ of the wall member 70′ are inserted into the hole portions 628′. A gap d622′ between the hole portions 628′ and the outer periphery of the wall member 620′ is approximately equal to a gap d32′ between the hole portions 38 a′ and the folding line L32′ in the column member 30′ (see FIG. 24). Furthermore, folding lines L621 b′ and cut lines C621 b′ are formed in the side end portion 620 b′. A gap d623′ between the folding lines L621 b′ and the hole portions 628′ is approximately equal to the gap d33′ between the hole portions 38 a′ and the hole portions 38 b′ in the column member 30′ (see FIG. 24).

The claw portions 625 b′ are formed by cutting along the cut lines C621 b′ and then valley-folding the claw portions along the folding lines L621 b′ at approximately right angles. In the present embodiment, five claw portions 625 b′ are formed. During assembly, the claw portions 625 b′ are inserted into the hole portions 38 b′ of the column member 30′. Accordingly, the wall member 620′ is fixed to the column member 30′. Portions of the claw portions 625 b′ that protrude from the hole portions 38 b′ are contained inside the column member 30′ (see FIG. 34).

Folding lines L623 a′ and L623 b′ and cut lines C623 a′ and C623 b′ are formed in the central portion of the wall member 620′. Claw portions 626 a′ and 626 b′ are formed by cutting along the cut lines C623 a′ and C623 b′ and then valley-folding the claw portions along the folding lines L623 a′ and L623 b′ at approximately right angles. The structures of the claw portions 626 a′ and 626 b′ are the same as the structures of the claw portions 66 a′ and 66 b′ of the wall member 60′.

FIG. 39 is a plan view of the wall member 810′. The structure of the wall member 810′ is the same as the structure of the wall member 80′. Specifically, hole portions 818 a′ are formed on a side end portion 810 a′ of the wall member 810′. In the present embodiment, five hole portions 818 a′ are formed. During assembly, later-described claw portions 825 b′ of the wall member 820′ are inserted into the hole portions 818 a′. A gap d811 a′ between the hole portions 818 a′ and the outer periphery of the wall member 810′ is approximately equal to the gap d42′ between the hole portions 48 a′ and the folding line L42′ in the column member 40′ (see FIG. 25). Furthermore, folding lines L811 a′ and cut lines C811 a′ are formed in the side end portion 810 a′. A gap d812 a′ between the folding lines L811 a′ and the hole portions 818 a′ is approximately equal to a gap d403′ between the hole portions 408 a′ and the hole portions 408 b′ in the column member 400′ (see FIG. 36), and the gap d43′ between the hole portions 48 a′ and the hole portions 48 b′ in the column member 40′ (see FIG. 25).

Hole portions 818 b′ are formed on a side end portion 810 b′ of the wall member 810′. In the present embodiment, five hole portions 818 b′ are formed. During assembly, the claw portions 54 a′ of the wall member 50′ are inserted into the hole portions 818 b′. A gap d811 b′ between the hole portions 818 b′ and the outer periphery of the wall member 810′ is approximately equal to the gap d12′ between the hole portions 18 a′ and the folding line L12′ in the column member 10′ (see FIG. 22). Furthermore, folding lines L811 b′ and cut lines C811 b′ are formed in the side end portion 810 b′. A gap d812 b′ between the folding lines L811 b′ and the hole portions 818 b′ is approximately equal to the gap d13′ between the hole portions 18 a′ and the hole portions 18 b′ in the column member 10′ (see FIG. 22).

Claw portions 815 a′ and 815 b′ are formed by cutting along the cut lines C811 a′ and C811 b′ and then valley-folding the claw portions along the folding lines L811 a′ and L811 b′ at approximately right angles. In the present embodiment, five claw portions 815 a′ and five claw portions 815 b′ are formed. During assembly, the claw portions 815 a′ are inserted into the hole portions 408 a′ of the column member 400′. Accordingly, the wall member 810′ is fixed to the column member 400′. Portions of the claw portions 815 a′ that protrude from the hole portions 408 a′ are contained inside the column member 400′ (see FIG. 34). Also, the claw portions 815 b′ are inserted into the hole portions 18 b′ of the column member 10′. Accordingly, the wall member 810′ is fixed to the column member 10′. Portions of the claw portions 815 b′ that protrude from the hole portions 18 b′ are contained inside the column member 10′ (see FIG. 34).

Folding lines L812 a′ and L812 b′ and cut lines C812 a′ and C812 b′ are formed in the central portion of the wall member 810′. Claw portions 816 a′ and 816 b′ are formed by cutting along the cut lines C812 a′ and C812 b′ and then valley-folding the claw portions along the folding lines L812 a′ and L812 b′ at approximately right angles. The structures of the claw portions 816 a′ and 816 b′ are the same as the structures of the claw portions 86 a′ and 86 b′ of the wall member 80′.

FIG. 40 is a plan view of the wall member 820′. The wall member 820′ is made of one piece of cardboard or heavy paper. Hole portions 828′ are formed on a side end portion 820 a′ of the wall member 820′. In the present embodiment, five hole portions 828′ are formed. During assembly, the claw portions 74 b′ of the wall member 70′ are inserted into the hole portions 828′. A gap d822′ between the hole portions 828′ and the outer periphery of the wall member 820′ is approximately equal to the gap d42′ between the hole portions 48 a′ and the folding line L42′ in the column member 40′ (see FIG. 25). Furthermore, folding lines L821 a′ and cut lines C821 a′ are formed in the side end portion 820 a′. A gap d823′ between the folding lines L821 a′ and the hole portions 828′ is approximately equal to the gap d43′ between the hole portions 48 a′ and the hole portions 48 b′ in the column member 40′ (see FIG. 25).

The claw portions 825 a′ are formed by cutting along the cut lines C821 a′ and then valley-folding the claw portions along the folding lines L821 a′ at approximately right angles. In the present embodiment, five claw portions 825 a′ are formed. During assembly, the claw portions 825 a′ are inserted into the hole portions 48 b′ of the column member 40′. Accordingly, the wall member 820′ is fixed to the column member 40′. Portions of the claw portions 825 a′ that protrude from the hole portions 48 b′ are contained inside the column member 40′ (see FIG. 34).

Claw portions 824′ are formed on a side end portion 820 b′ of the wall member 820′. In the present embodiment, five claw portions 824′ are formed. During assembly, the claw portions 824′ are valley-folded along the folding lines L822′ at approximately right angles and then inserted into the hole portions 408 a′ of the column member 400′ via opening portions of the wall member 810′ (opening portions created when the claw portions 815 a′ are formed). Accordingly, the wall member 820′ is connected to the wall member 810′ and fixed to the column member 400′. Portions of the claw portions 824′ that protrude from the hole portions 408 a′ are contained inside the column member 400′ (see FIG. 34).

Furthermore, folding lines L821 b′ and cut lines C821 b′ are formed in the side end portion 820 b′. A gap d821′ between the folding lines L821 b′ and the outer periphery of the wall member 820′ is approximately equal to the gap d812 a′ in the wall member 810′ (see FIG. 39) and the gap d403′ in the column member 400′ (see FIG. 36). The claw portions 825 b′ are formed by cutting along the cut lines C821 b′ and then valley-folding the claw portions along the folding lines L821 b′ at approximately right angles. In the present embodiment, five claw portions 825 b′ are formed. During assembly, the claw portions 825 b′ are inserted into the hole portions 818 a′ of the wall member 810′ and the hole portions 408 b′ of the column member 400′. Accordingly, the wall member 820′ is connected to the wall member 810′ and fixed to the column member 400′. Portions of the claw portions 825 b′ that protrude from the hole portions 408 b′ are contained inside the column member 400′ (see FIG. 34).

Folding lines L823 a′ and L823 b′ and cut lines C823 a′ and C823 b′ are formed in the central portion of the wall member 820′. Claw portions 826 a′ and 826 b′ are formed by cutting along the cut lines C823 a′ and C823 b′ and then valley-folding the claw portions along the folding lines L823 a′ and L823 b′ at approximately right angles. The structures of the claw portions 826 a′ and 826 b′ are the same as the structures of the claw portions 86 a′ and 86 b′ of the wall member 80′.

Effects of the ready-to-assemble house 4 will be described below. In the ready-to-assemble house 4, the wall member 600′ is constituted by the two wall members 610′ and 620′ that can be connected to each other, and the wall member 800′ is constituted by the two wall members 810′ and 820′ that can be connected to each other. Accordingly, it is possible to increase the depth of the space S2′ and retain a large private space.

Also, in the ready-to-assemble house 4, the size of the space S2′ can be changed by attaching or removing the wall members 620′ and 820′. If the wall members 620′ and 820′ have been removed, it is sufficient to insert the claw portions 615 b′ of the wall member 610′ into the hole portions 38 b′ of the column member 30′ and insert the claw portions 74 a′ of the wall member 70′ into the hole portions 618 b′. Also, it is sufficient to insert the claw portions 815 a′ of the wall member 810′ into the hole portions 48 b′ of the column member 40′, and insert the claw portions 74 b′ of the wall member 70′ into the hole portions 818 a′.

Furthermore, the column member 200′ can be formed into a rectangular column by folding it along the folding lines L201′ to L204′. This column member 200′ functions as a support column and raises the strength of the ready-to-assemble house 4 after assembly. Also, the column member 400′ can be formed into a rectangular column by folding it along the folding lines L401′ to L404′. This column member 400′ also functions as a support column and raises the strength of the ready-to-assemble house 4 after assembly.

The column member 200′ is configured such that its rectangular column shape is maintained due to the claw portions 204′ being inserted into the hole portions 208 c′. Accordingly, the shape of the column member 200′ after assembly can be maintained with a simple structure. Here, portions of the claw portions 204′ that protrude from the hole portions 208 c′ are contained inside the column member 200′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 4 from becoming caught on the claw portions 204′. Also, hiding the claw portions 204′ inside the column member 200′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 4.

The column member 400′ is configured such that its rectangular column shape is maintained due to the claw portions 404′ being inserted into the hole portions 408 c′. Accordingly, the shape of the column member 400′ after assembly can be maintained with a simple structure. Here, portions of the claw portions 404′ that protrude from the hole portions 408 c′ are contained inside the column member 400′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 4 from becoming caught on the claw portions 404′. Also, hiding the claw portions 404′ inside the column member 400′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 4.

The wall member 610′ is fixed to the column member 200′ due to the claw portions 615 b′ being inserted into the hole portions 208 a′ of the column member 200′. Accordingly, the wall member 610′ and the column member 200′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 615 b′ that protrude from the hole portions 208 a′ are contained inside the column member 200′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 4 from becoming caught on the claw portions 615 b′. Also, hiding the claw portions 615 b′ inside the column member 200′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 4.

The wall member 620′ is fixed to the column member 200′ due to the claw portions 624′ and 625 a′ being respectively inserted into the hole portions 208 a′ and 208 b′ of the column member 200′. Accordingly, the wall member 620′ and the column member 200′ can be fixed to each other with a simple configuration. Here, the portions of the claw portions 624′ and 625 a′ that protrude from the hole portions 208 a′ and 208 b′ are contained inside the column member 200′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 4 from becoming caught on the claw portions 624′ and 625 a′. Also, hiding the claw portions 624′ and 625 a′ inside the column member 200′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 4.

The wall member 810′ is fixed to the column member 400′ due to the claw portions 815 a′ being inserted into the hole portions 408 a′ of the column member 400′. Accordingly, the wall member 810′ and the column member 400′ can be fixed to each other with a simple configuration. Here, portions of the claw portions 815 a′ that protrude from the hole portions 408 a′ are contained inside the column member 400′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 4 from becoming caught on the claw portions 815 a′. Also, hiding the claw portions 815 a′ inside the column member 400′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 4.

The wall member 820′ is fixed to the column member 400′ due to the claw portions 824′ and 825 b′ being respectively inserted into the hole portions 408 a′ and 408 b′ of the column member 400′. Accordingly, the wall member 820′ and the column member 400′ can be fixed to each other with a simple configuration. Here, the portions of the claw portions 824′ and 825 b′ that protrude from the hole portions 408 a′ and 408 b′ are contained inside the column member 400′. For this reason, it is possible to prevent users and the like of the ready-to-assemble house 4 from becoming caught on the claw portions 824′ and 825 b′. Also, hiding the claw portions 824′ and 825 b′ inside the column member 400′ in this way makes it possible to improve the aesthetic quality of the ready-to-assemble house 4.

Other effects of the ready-to-assemble house 4 are similar to those of the ready-to-assemble house 3. Note that in the ready-to-assemble house 4 as well, a roof member that covers the space S2′ from above may be provided similarly to the ready-to-assemble house 3.

The ready-to-assemble house according the present invention is not limited to the above embodiments, and various variations are possible. For example, the case of providing four support columns (column members) is described in the first embodiment and the third embodiment, and the case of providing six support columns is described in the second embodiment and the fourth embodiment. However, the number of support columns can be set to any number greater than or equal to one.

Cases where the support columns are shaped as rectangular columns are described in the above embodiments. However, the support columns can generally be columns having n sides (n being an integer greater than or equal to 3). Cases where n=4 are described in the above embodiments.

Cases where a door (door 52) is provided in the wall member 50 are described in the above embodiments. However, the door may be provided in a wall member other than the wall member 50.

Cases where a structure for inserting claw portions into hole portions is used as the structure for fixing members to each other are described in the above embodiments. In order to further strengthen this fixing, a stopper member 902 provided with a cut 902 a may be used as shown in FIG. 41. Specifically, a cut 904 a is provided in the claw portion 904 as well, and the claw portion 904 can be prevented from coming out of the hole portion 906 by engaging the cut 902 a of the stopper member 902 with the cut 904 a in the portion of the claw portion 904 protruding from the hole portion 906. Note that another means (e.g., adhering using packaging tape) may be used for the fixing of members to each other.

The structures of the column members are not limited to the structures described in the above embodiments. For example, a column member 100′ shown in FIGS. 42 and 43 may be used in place of the column members 10′, 20′, 30′, 40′, 200′, and 400′. The column member 100′ is made of one piece of cardboard or heavy paper and has a horizontally symmetrical structure. Folding lines L101 a′ and L101 b′, folding lines L102 a′ and L102 b′, folding lines L103 a′ and L103 b′, folding lines L104 a′, L104 b′, and L104 c′, folding lines L105 a′, L105 b′, L105 c′, and L105 d′, and folding lines L106 a′, L106 b′, L106 c′, and L106 d′ are formed in the column member 100′. Also, cut lines C101 a′, C101 b′, C101 c′, and C101 d′ and a cut line C102′ are formed in the column member 100′.

The gap between the folding line L101 a′ and the folding line L102 a′ is approximately equal to the gap between the folding line L101 b′ and the folding line L102 b′. The gap between the folding line L101 a′ and the folding line L101 b′ is approximately equal to the sum of the gap between the folding line L102 a′ and the folding line L103 a′ and the gap between the folding line

L102 b′ and the folding line L103 b′. Also, the lengths of the folding lines L106 a′, L106 b′, L106 c′, and L106 d′ are approximately equal to the gap between the folding line L101 a′ and the folding line L102 a′ (the gap between the folding line L101 b′ and the folding line L102 b′).

The column member 100′ shaped as a rectangular column shown in FIG. 42 is obtained by cutting along the above cut lines and then mountain-folding the column member along the above folding lines at approximately right angles. The portion surrounded by the cut line C102′ becomes the claw portion 109′. The function of the claw portion 109′ is the same as that of the claw portions 19′, 29′, 39′, 49′, 209′, and 409′.

Furthermore, cuts 102 a′ and 102 b′, claw portions 104 a′ and 104 b′, and hole portions 108 a′ and 108 b′ are formed in the column member 100′. The cut 102 a′ is provided so as to separate the two folding lines L105 a′ and L105 b′ in the upper end portion of the column member 100′. Also, the cut 102 b′ is provided so as to separate the two folding lines L105 c′ and L105 d′ in the lower end portion of the column member 100′.

The claw portions 104 a′ and 104 b′ are provided on respective side end portions of the column member 100′. Specifically, the entirety of the portion outward of the folding line L103 a′ is the claw portion 104 a′, and the entirety of the portion outward of the folding line L103 b′ is the claw portion 104 b′.

During assembly, the claw portions 104 a′ and 104 b′ are inserted into the cuts 102 a′ and 102 b′. Accordingly, the rectangular column shape of the column member 100′ is maintained. The portions of the claw portions 104 a′ and 104 b′ that protrude from the cuts 102 a′ and 102 b′ are contained inside the column member 100′.

The hole portions 108 a′ and 108 b′ are located between the folding line L101 a′ and the folding line L101 b′. In the present embodiment, five holes portions 108 a′ and five hole portions 108 b′ are provided. The function of the hole portions 108 a′ is the same as that of the hole portions 18 a′, 28 b′, 38 a′, 48 b′, 208 b′, and 408 a′. Also, the function of the hole portions 108 b′ is the same as that of the hole portions 18 b′, 28 a′, 38 b′,48 a′, 208 a′, and 408 b′.

Also, needless to say, the ready-to-assemble house according to the present invention is also applicable to uses other than retaining private space at an evacuation shelter and providing a play space for children. For example, the ready-to-assemble house according to the present invention may be used for a living space for people living on the streets.

LIST OF REFERENCE NUMERALS

-   1 Ready-to-assemble house -   2 Ready-to-assemble house -   3 Ready-to-assemble house -   4 Ready-to-assemble house -   10 Column member (first column member) -   14 Claw portion -   18 a, 18 b, 18 c Hole portion -   20 Column member (second column member) -   24 Claw portion -   28 a, 28 b, 28 c Hole portion -   30 Column member (third column member) -   34 Claw portion -   38 a, 38 b, 38 c Hole portion -   40 Column member (fourth column member) -   44 Claw portion -   48 a, 48 b, 48 c Hole portion -   50 Wall member (first wall member) -   50 a Side end portion (first side end portion) -   50 b Side end portion (second side end portion) -   52 Door -   56 a, 56 b Notch portion -   58 a, 58 b Hole portion -   60 Wall member (second wall member) -   60 a Side end portion (first side end portion) -   60 b Side end portion (second side end portion) -   64 a, 64 b Claw portion -   65 a, 65 b Claw portion -   70 Wall member (third wall member) -   70 a Side end portion (first side end portion) -   70 b Side end portion (second side end portion) -   76 a, 76 b Notch portion -   78 a, 78 b Hole portion -   80 Wall member (fourth wall member) -   80 a Side end portion (first side end portion) -   80 b Side end portion (second side end portion) -   84 a, 84 b Claw portion -   85 a, 85 b Claw portion -   90 Roof member -   92 a, 92 b, 92 c, 92 d Cut -   95 a, 95 b, 95 c, 95 d Claw portion -   98 a, 98 b, 98 c, 98 d Hole portion -   200 Column member (fifth column member) -   204 Claw portion -   208 a, 208 b, 208 c Hole portion -   400 Column member (sixth column member) -   404 Claw portion -   408 a, 408 b, 408 c Hole portion -   600 Wall member (second wall member) -   610 Wall member (sub wall member) -   610 a, 610 b Side end portion -   614 a, 614 b Claw portion -   615 a, 615 b Claw portion -   620 Wall member (sub wall member) -   620 a, 620 b Side end portion -   624 Claw portion -   625 a, 625 b Claw portion -   626 Notch portion -   800 Wall member (fourth wall member) -   810 Wall member (sub wall member) -   810 a, 810 b Side end portion -   814 a, 814 b Claw portion -   815 a, 815 b Claw portion -   820 Wall member (sub wall member) -   820 a, 820 b Side end portion -   824 Claw portion -   825 a, 825 b Claw portion -   826 Notch portion -   10′ Column member (first column member) -   14′ Claw portion -   18 a′ Hole portion (first hole portion) -   18 b′ Hole portion (second hole portion) -   18 c′ Hole portion (third hole portion) -   19′ Claw portion -   20′ Column member (second column member) -   24′ Claw portion -   28 a′ Hole portion (first hole portion) -   28 b′ Hole portion (second hole portion) -   28 c′ Hole portion (third hole portion) -   29′ Claw portion -   30′ Column member (third column member) -   34′ Claw portion -   38 a′ Hole portion (first hole portion) -   38 b′ Hole portion (second hole portion) -   38 c′ Hole portion (third hole portion) -   39′ Claw portion -   40′ Column member (fourth column member) -   44′ Claw portion -   48 a′ Hole portion (first hole portion) -   48 b′ Hole portion (second hole portion) -   48 c′ Hole portion (third hole portion) -   49′ Claw portion -   50′ Wall member (first wall member) -   50 a′ Side end portion (first side end portion) -   50 b′ Side end portion (second side end portion) -   52′ Door -   54 a′ Claw portion (first claw portion) -   54 b′ Claw portion (second claw portion) -   59′ Claw portion -   60′ Wall member (second wall member) -   60 a′ Side end portion (first side end portion) -   60 b′ Side end portion (second side end portion) -   65 a′ Claw portion (first claw portion) -   65 b′ Claw portion (second claw portion) -   66 a′, 66 b′ Claw portion -   68 a′, 68 b′ Hole portion -   70′ Wall member (third wall member) -   70 a′ Side end portion (first side end portion) -   70 b′ Side end portion (second side end portion) -   74 a′ Claw portion (first claw portion) -   74 b′ Claw portion (second claw portion) -   79′ Claw portion -   80′ Wall member (fourth wall member) -   80 a′ Side end portion (first side end portion) -   80 b′ Side end portion (second side end portion) -   85 a′ Claw portion (first claw portion) -   85 b′ Claw portion (second claw portion) -   86 a′, 86 b′ Claw portion -   88 a′, 88 b′ Hole portion -   90′ Roof member -   94 a′, 94 b′, 94 c′, 94 d′ Claw portion -   96 a′, 96 b′, 96 c′, 96 d′ Hole portion -   98 a′, 98 b′, 98 c′, 98 d′ Hole portion -   99 a′, 99 b′ Hole portion -   100′ Column member -   102 a′, 102 b′ Cut -   104 a′, 104 b′ Claw portion -   108 a′, 108 b′ Hole portion -   109′ Claw portion -   200′ Column member (fifth column member) -   204′ Claw portion -   208 a′ Hole portion (first hole portion) -   208 b′ Hole portion (second hole portion) -   208 c′ Hole portion (third hole portion) -   209′ Claw portion -   400′ Column member (sixth column member) -   404′ Claw portion -   408 a′ Hole portion (first hole portion) -   408 b′ Hole portion (second hole portion) -   408 c′ Hole portion (third hole portion) -   409′ Claw portion -   600′ Wall member (second wall member) -   610′ Wall member (first sub wall member) -   610 a′, 610 b′ Side end portion -   615 a′, 615 b′ Claw portion -   616 a′, 616 b′ Claw portion -   618 a′, 618 b′ Hole portion -   620′ Wall member (second sub wall member) -   620 a′, 620 b′ Side end portion -   624′ Claw portion -   625 a′, 625 b′ Claw portion -   626 a′, 626 b′ Claw portion -   628′ Hole portion -   800′ Wall member (fourth wall member) -   810′ Wall member (third sub wall member) -   810 a′, 810 b′ Side end portion -   815 a′, 815 b′ Claw portion -   816 a′, 816 b′ Claw portion -   818 a′, 818 b′ Hole portion -   820′ Wall member (fourth sub wall member) -   820 a′, 820 b′ Side end portion -   824′ Claw portion -   825 a′, 825 b′ Claw portion -   826 a′, 826 b′ Claw portion -   828′ Hole portion -   902 Stopper member -   902 a Cut -   904 Claw portion -   904 a Cut -   906 Hole portion 

1. A ready-to-assemble house comprising: a first column member made of cardboard or heavy paper; and first to fourth wall members made of cardboard or heavy paper, wherein the first column member has a plurality of folding lines and is configured to become shaped as a column having n sides (n being an integer greater than or equal to 3) by being folded along the folding lines, the first wall member is configured such that a first side end portion is fixed to the first column member, the second wall member is configured such that a first side end portion is fixed to a second side end portion of the first wall member, the third wall member is configured such that a first side end portion is fixed to a second side end portion of the second wall member, and the fourth wall member is configured such that a first side end portion is fixed to a second side end portion of the third wall member, and a second side end portion is fixed to the first side end portion of the first wall member.
 2. The ready-to-assemble house according to claim 1, wherein the first wall member is configured to be fixed to the first column member by a first claw portion formed on the first side end portion being inserted into a first hole portion formed in the first column member, and a portion of the first claw portion of the first wall member that protrudes from the first hole portion of the first column member is contained inside the first column member.
 3. The ready-to-assemble house according to claim 1, wherein the fourth wall member is configured to be fixed to the first column member by a second claw portion formed on the second side end portion being inserted into a second hole portion formed in the first column member, and a portion of the second claw portion of the fourth wall member that protrudes from the second hole portion of the first column member is contained inside the first column member.
 4. The ready-to-assemble house according to claim 1, wherein the first column member is configured such that the shape of a column having n sides is maintained by a claw portion formed on the first column member being inserted into a third hole portion formed in the first column member, and a portion of the claw portion of the first column member that protrudes from the third hole portion of the first column member is contained inside the first column member.
 5. The ready-to-assemble house according to claim 1, comprising: a second column member made of cardboard or heavy paper, wherein the second column member has a plurality of folding lines and is configured to become shaped as a column having n sides by being folded along the folding lines, and the second wall member is configured such that the first side end portion is fixed to the second column member.
 6. The ready-to-assemble house according to claim 1, comprising: a third column member made of cardboard or heavy paper, wherein the third column member has a plurality of folding lines and is configured to become shaped as a column having n sides by being folded along the folding lines, and the third wall member is configured such that the first side end portion is fixed to the third column member.
 7. The ready-to-assemble house according to claim 1, comprising: a fourth column member made of cardboard or heavy paper, wherein the fourth column member has a plurality of folding lines and is configured to become shaped as a column having n sides by being folded along the folding lines, and the fourth wall member is configured such that the first side end portion is fixed to the fourth column member.
 8. The ready-to-assemble house according to claim 1, wherein the second wall member is constituted by first and second sub wall members that can be connected to each other.
 9. The ready-to-assemble house according to claim 8, comprising: a fifth column member made of cardboard or heavy paper, wherein the fifth column member has a plurality of folding lines and is configured to become shaped as a column having n sides by being folded along the folding lines, and the first and second sub wall members constituting the second wall member are configured to be able to be connected via the fifth column member.
 10. The ready-to-assemble house according to claim 9, wherein the first sub wall member is configured to be fixed to the fifth column member by a claw portion formed on the first sub wall member being inserted into a first hole portion formed in the fifth column member, and a portion of the claw portion of the first sub wall member that protrudes from the first hole portion of the fifth column member is contained inside the fifth column member.
 11. The ready-to-assemble house according to claim 9, wherein the second sub wall member is configured to be fixed to the fifth column member by a claw portion formed on the second sub wall member being inserted into a second hole portion formed in the fifth column member, and a portion of the claw portion of the second sub wall member that protrudes from the second hole portion of the fifth column member is contained inside the fifth column member.
 12. The ready-to-assemble house according to claim 9, wherein the fifth column member is configured such that the shape of a column having n sides is maintained by a claw portion formed on the fifth column member being inserted into a third hole portion formed in the fifth column member, and a portion of the claw portion of the fifth column member that protrudes from the third hole portion of the fifth column member is contained inside the fifth column member.
 13. The ready-to-assemble house according to claim 1, wherein the fourth wall member is constituted by third and fourth sub wall members that can be connected to each other.
 14. The ready-to-assemble house according to claim 1, comprising a roof member that is made of cardboard or heavy paper and covers, from above, a space surrounded by the first to fourth wall members.
 15. The ready-to-assemble house according to claim 14, wherein the roof member is configured such that a first side end portion has a J-shaped cross-section.
 16. The ready-to-assemble house according to claim 15, wherein the roof member is configured such that the first side end portion having a J-shaped cross-section is located between the first column member and the fourth column member.
 17. The ready-to-assemble house according to claim 14, wherein the roof member is configured such that a second side end portion has a J-shaped cross-section.
 18. The ready-to-assemble house according to claim 17, wherein the roof member is configured such that the second side end portion having a J-shaped cross-section is located between the second column member and the third column member.
 19. The ready-to-assemble house according to claim 14, wherein the roof member has a plurality of folding lines and is configured to become shaped as a box having an open bottom by being folded along the folding lines.
 20. The ready-to-assemble house according to claim 1, wherein the first side end portion of the first wall member is fixed to the first column member, the first side end portion of the second wall member is fixed to the second side end portion of the first wall member, the first side end portion of the third wall member is fixed to the second side end portion of the second wall member, the first side end portion of the fourth wall member is fixed to the second side end portion of the third wall member, and the second side end portion is fixed to the first side end portion of the first wall member, and the ready-to-assemble house has a space surrounded by the first to fourth wall members. 